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Comparative Solutions Evidence Base: Prison Reforms That Have Demonstrably Worked in Other States and Nations

148 Data Points 49 Sources 70 Entities Research Date: Jul 4, 2026
The Brennan Center's 2026 report, based on visits to over 20 prisons in 10 states, documents that dignity-first reforms like Pennsylvania's Little Scandinavia unit and South Carolina's Restoring Promise program significantly reduce violence and restrictive housing. The report identifies Georgia as a state lacking independent oversight and lagging in the national reform movement, which is concentrated in the West, Midwest, and Northeast. It provides a staged set of policy recommendations for Georgia, from low-cost oversight and drug-testing reforms to structural sentencing changes, while cautioning against direct transplantation of international models and noting critical data gaps in several U.S. state programs.
21.3% Recidivism rate of older federal offenders
$2.8M New Jersey independent corrections ombudsperson a…
10% Three-year recidivism for released women aged 55+…
22% Pennsylvania facilities saw a ~22% jump in violen…
10.5% Pennsylvania correctional-officer vacancy rate re…

Key Findings

The most impactful data from this research collection.

All Data Points

148 verified data points extracted from primary sources.

Recidivism rate of older federal offenders Statistic
The U.S. Sentencing Commission found the recidivism rate of older offenders (21.3%) was less than half that of offenders under the age of 50 (53.4%). This is a rearrest-based measure over an eight-year follow-up.
21.3% vs. Offenders under age 50
reentry demographics
Little Scandinavia unit had almost no violent episodes in 2024 Statistic
The Little Scandinavia unit at SCI Chester in Pennsylvania had almost no violent episodes in 2024.
0 violent episodes
violence facilities operations
New Jersey independent corrections ombudsperson annual cost Statistic
New Jersey runs a fully independent corrections ombudsperson for about $2.8 million/year with 26 staff.
$2.8M USD/year
oversight budget policy
Georgia lacks independent prison oversight mechanisms Finding
Georgia lacks independent prison oversight; the Brennan Center's March 2026 report names Georgia as lacking such mechanisms.
policy investigations conditions
Washington OCO created by Second Substitute House Bill 1889 in 2018 Legal fact
Washington Office of Corrections Ombuds (OCO) was created by Second Substitute House Bill 1889 (2018 session), signed by Governor Inslee on March 27, 2018, codified at RCW 43.06C.
policy legal operations
Three-year recidivism for released women aged 55+ in Massachusetts Statistic
A Massachusetts DOC study of 2019 releases found a three-year recidivism rate of 10% for women aged 55 and older.
10% vs. Women aged 30-34
reentry demographics
Pennsylvania facilities saw a ~22% jump in violence Statistic
While the Little Scandinavia unit had almost no violent episodes in 2024, Pennsylvania facilities overall saw a ~22% jump in violence.
22%
violence facilities
Pennsylvania correctional-officer vacancy rate reduction Statistic
Pennsylvania cut its correctional-officer vacancy rate from 10.5% to 4.8% in two years through a dedicated recruitment division.
10.5% vs. reduced vacancy rate
staffing policy
Washington OCO oversees 11 state prisons and about 13,075 incarcerated people Statistic
The Washington OCO oversees 11 state prison facilities incarcerating about 13,075 people.
13,075 people
facilities demographics operations
Three-year recidivism for released men aged 55+ in Massachusetts Statistic
A Massachusetts DOC study of 2019 releases found a three-year recidivism rate of 12% for men aged 55 and older.
12% vs. Men aged 30-34
reentry demographics
Michigan Vocational Village 2019 graduates recidivated 6.5 percentage points below the state rate Statistic
Michigan Vocational Village 2019 graduates recidivated 6.5 percentage points below the state rate.
6.5% vs. state recidivism rate
reentry recidivism programs
New York prison population and violent crime decline Statistic
New York more than halved its prison population from 1999 to 2023 while its violent crime rate fell 34%, faster than the national 28% decline.
34% vs. national violent crime rate decline
decarceration crime trend
Washington OCO statutory purpose includes reducing DOC litigation exposure Legal fact
The OCO's statutory purpose explicitly includes reducing DOC exposure to litigation; correspondence with the office is confidential and privileged.
legal policy operations
Arrest rate for ages 50-65 Statistic
The Vera Institute (2017) reported arrest rates drop to just over 2% for ages 50–65.
2%
reentry demographics
Vera's Restoring Promise program showed a 73% reduction in odds of violent incidents Statistic
A randomized trial of Vera's Restoring Promise program at South Carolina sites showed a 73 percent reduction in the odds of violent incidents.
73%
violence programs operations
Netherlands prison rate and closures Statistic
The Netherlands cut its prison rate approximately 46% from 2005 to 2016 and closed roughly half its prisons as crime fell.
46%
decarceration crime trend
New Jersey Corrections Ombudsperson strengthened by Dignity Act in 2020 Legal fact
New Jersey Office of the Corrections Ombudsperson was strengthened by the Dignity Act (P.L. 2019, c.288), signed 2020. It is an independent office in, but not of, the Department of the Treasury, reporting to the Governor; the Ombudsperson serves a f…
legal policy operations
Arrest rate for ages above 65 Statistic
The Vera Institute (2017) reported arrest rates drop to near zero above age 65.
0%
reentry demographics
Vera's Restoring Promise program showed an 83% reduction in odds of restrictive-housing stays Statistic
A randomized trial of Vera's Restoring Promise program at South Carolina sites showed an 83 percent reduction in the odds of restrictive-housing stays.
83%
solitary conditions programs
California Ashker settlement solitary population reduction at Pelican Bay Statistic
California's Ashker settlement moved 1,512+ people out of solitary and cut Pelican Bay's long-term isolation population from 513 to 2, a 99.6% reduction, with no reported violence surge.
99.6%
solitary violence legal policy
New Jersey Ombudsperson FY2025 budget was $2,806,000 with 26 staff Statistic
New Jersey Office of the Corrections Ombudsperson budget was $2,806,000 (FY2025) with 26 staff.
$2.8M USD
budget staffing operations
Estimated annual savings per released aging prisoner Statistic
The ACLU estimated releasing an aging prisoner saves states on average $66,294 per year, with a minimum of at least $28,362.
$66,294 USD vs. Minimum estimated savings
budget reentry
Georgia lacks independent oversight of its prisons Finding
The Brennan Center report names Georgia as lacking independent oversight.
policy investigations legal
California statewide SHU population reduction post-Ashker Statistic
Statewide total SHU/solitary population in California fell 65%, from 9,870 in December 2012 to 3,471 in August 2016.
65%
solitary policy trend
New Jersey Ombudsperson oversees 9 state prisons and about 13,000 people Statistic
The New Jersey Ombudsperson oversees 9 state prisons (~13,000 people) and has subpoena power, unannounced-inspection authority, and confidential/privileged communications, advised by a citizens' board.
13,000 people
facilities demographics operations legal
Federal medical-center prisoner cost vs. average Statistic
The DOJ estimated a federal medical-center prisoner cost $57,962 versus a $28,893 average in 2013.
$57,962 USD vs. Average federal prisoner cost
budget medical
Georgia prohibits incarcerated students from state financial aid Finding
The Brennan Center report notes that Georgia prohibits incarcerated students from state financial aid.
policy reentry legal
California SHU count decline 2015-2018 Statistic
Statewide SHU counts in California fell from 3,045 in July 2015 to 1,028 in July 2016, 641 on July 31, 2017, and 594 on June 29, 2018.
594 people vs. July 2015 SHU count
solitary trend
Nearly 20% of surveyed NJ prison population had phone privileges revoked in 2023 Statistic
The April 2024 'Visits and Phone Calls' report found nearly 20% of the surveyed prison population had phone privileges revoked in 2023 (including one person at South Woods State Prison for almost nine years), prompting reform legislation.
20%
conditions policy facilities
Number of states with compassionate/geriatric release laws Statistic
45 states and the federal government have compassionate/geriatric release laws but rarely use them because of political and procedural barriers.
45 states
policy legal reentry
Prison reform movement is concentrated in the West, Midwest, and Northeast, with the South lagging Finding
The report notes the reform movement is concentrated in the West, Midwest, and Northeast, with the South (except South Carolina) lagging.
policy trend
Ashker settlement plaintiffs' attorney fees Statistic
Plaintiffs' attorney fees for the Ashker v. Brown settlement were $4,550,000 through September 1, 2015, with a later monitoring quarter settled for $349,300.
$4.6M USD
legal solitary budget
HMIP published 64 reports in 2024-25 Statistic
HM Inspectorate of Prisons (HMIP) is an independent inspectorate that publishes reports and issues Urgent Notifications; it published 64 reports in 2024–25 (79 in 2023–24).
64 reports vs. 2023-24 reports
operations investigations
Obstacles to compassionate release in Georgia Finding
In Georgia the parole board's risk-aversion and restrictive eligibility criteria are the named obstacles to the use of compassionate release.
policy parole reentry
North Dakota achieved a 74.28% reduction in solitary confinement Statistic
The strongest peer-reviewed numbers include North Dakota's 74.28% solitary reduction.
74.3%
solitary conditions policy
Arizona STG program violence reduction claim Statistic
An NIJ-funded evaluation found that placing gang members in a Special Management Unit reduced rates of assault, drug violations, threats, fighting, and rioting by over 50 percent.
50%
gangs violence solitary
Positive random drug-test rates frequently above 30% in England & Wales prisons Statistic
HMIP's 2024–25 annual report found positive random drug-test rates frequently above 30% (up to 53% at HMP Hindley).
30% vs. HMP Hindley rate
drugs conditions facilities
Norway's maximum sentence as international norm Finding
Norway's 21-year maximum sentence illustrates far shorter time served compared to the U.S.
policy legal
Oregon achieved a 55.7% to 73.9% reduction in solitary confinement Statistic
The strongest peer-reviewed numbers include Oregon's 55.7%/73.9% solitary reduction.
55.7% vs. upper bound reduction
solitary conditions policy
Arizona supermax effect on violence contested Finding
A 2006 study found that opening a supermax had no effect on prisoner-on-prisoner violence in Arizona, Illinois, and Minnesota, and that prisoner-on-staff violence increased in Arizona.
solitary violence gangs
Violence rose 55% at Lowdham Grange prison Statistic
HMIP's 2024–25 annual report found violence rose 55% at Lowdham Grange.
55%
violence facilities conditions
National three-year rearrest rate after prison release Statistic
Per the Brennan Center's March 2026 report, roughly 62% of people released from prison are rearrested within three years.
62%
reentry
Norway's per-prisoner spending is approximately $127K-$129K Statistic
Norway's per-prisoner spending is approximately $127K–$129K nationally for 2018.
$128,000 USD per prisoner
budget policy
Texas GRAD program completions as of 2012 Statistic
The Texas GRAD program had 2,668 completions as of February 29, 2012.
2,668 completions
gangs policy
30 of 32 closed prisons rated poor or insufficiently good for purposeful activity Statistic
HMIP's 2024–25 annual report found 30 of 32 closed prisons were rated poor or insufficiently good for purposeful activity.
30 prisons vs. total closed prisons assessed
conditions facilities reentry
National three-year reincarceration rate after prison release Statistic
Per the Brennan Center's March 2026 report, 39% of people released from prison return to prison within three years.
39%
reentry
Norway's staffing ratio is 1:1.1 staff to prisoners Statistic
Norway has a 1:1.1 staffing ratio.
1.1 staff per prisoner
staffing policy
TDCJ inmates in security detention as of April 2024 Statistic
As of April 30, 2024, TDCJ reported 2,987 inmates in security detention, roughly 40% based on STG membership.
2,987 inmates
gangs solitary
HMIP cannot enforce its findings Finding
Crucially, HMIP 'cannot enforce' its findings — a structural limitation Georgia should design around by pairing inspection with an enforcement or reporting mandate.
policy legal operations
Number of people released from prison in 2023 Statistic
Per the Brennan Center's March 2026 report, roughly 450,000 people were released from prison in 2023.
450,000 people
reentry
Norway has a 21-year maximum sentence cap Legal fact
Norway has a 21-year sentence cap.
legal policy
Norway staff-to-inmate ratio Statistic
Norway's prison system is designed for a 1:1.1 staff-to-inmate ratio.
1.1 staff per inmate
staffing conditions
New Jersey oversight office costs ~$2.8M/year, a fraction of a single conditions settlement Statistic
New Jersey's office costs ~$2.8M/year for 26 staff — a fraction of a single conditions settlement (e.g., Ashker plaintiffs' fees alone exceeded $4.5M plus years of monitoring).
$2.8M USD vs. Ashker plaintiffs' fees
budget legal policy
Average recidivism reduction from reentry programs Statistic
A DOJ meta-analysis found reentry programs reduce recidivism on average by about 6%, with larger effects when treatment began in prison and continued into the community.
6%
reentry policy
NIJ evaluation credits Arizona supermax with cutting violence over 50% Finding
One NIJ evaluation credits supermax with cutting violence >50%.
violence solitary conditions
Norway vs Michigan per-prisoner spending 2018 Statistic
Norway spent $129,222 per prisoner in 2018 compared with $38,051 per prisoner in Michigan.
$129,222 USD vs. Michigan per-prisoner spending
budget conditions
Neither GDC nor the Governor's office has supported an independent oversight office Finding
The named Georgia obstacle: neither GDC nor the Governor's office has supported an independent office; enabling legislation is required.
policy legal operations
Lack of evidence-based standard for reentry programs Finding
NIJ cautions that no reentry program yet meets the 'evidence-based' standard via replicated RCTs, and results are mixed.
reentry methodology_note
2006 study found no effect of supermax on violence and increased staff violence Finding
A 2006 study found no effect of supermax on violence and increased staff violence.
violence solitary conditions staffing
Norway vs US average per-inmate spending Statistic
Norway spends $127,671 per year per inmate, compared to an average of $25,000 in the United States.
$127,671 USD vs. US average per-inmate spending
budget conditions
Pennsylvania DOC correctional-officer vacancy rate dropped from 10.5% to 4.8% Statistic
Over the first two years of the Shapiro Administration, the PA DOC correctional-officer vacancy rate dropped from 10.5% to 4.8% (a 5.7-point drop) after creating a dedicated Recruitment and Retention Division in late 2022 and holding 750+ job fairs/…
4.8% vs. previous vacancy rate
staffing policy operations
Michigan Vocational Village recidivism reduction Statistic
Michigan's Vocational Village: 2019 graduates had a recidivism rate 6.5 percentage points lower than the state's overall rate that year.
6.5%
reentry operations
USSC geriatric rearrest rate is 21.3% Statistic
The target for geriatric/compassionate release 3-year rearrest among released 55+ cohorts is at or below the USSC's 21.3%.
21.3%
reentry recidivism policy
Norway reconviction rate Statistic
In 2018, the reconviction rate in Norway was 18 percent within two years of release and 25 percent after five years, down from a pre-reform 60–70%.
18%
recidivism reentry
Pennsylvania DOC held 750+ job fairs/events in 2024 Statistic
The PA DOC held 750+ job fairs/events in 2024 as part of its targeted recruitment strategy.
750 events
staffing operations
Credible-messenger models show promising results Finding
Mentoring by people with lived experience shows promising short-term recidivism reduction, especially in juvenile justice, though findings are largely correlational and depend on relationship length and intensity.
reentry operations
Pennsylvania reduced staff vacancy from 10.5% to 4.8% Statistic
Pennsylvania reduced staff vacancy from 10.5% to 4.8%.
4.8% vs. previous vacancy rate
staffing policy
Bastøy Prison recidivism rate Statistic
Bastøy Prison has a recidivism rate of just 16 percent, compared to Norway's national average of 20 percent.
16% vs. Norway national average recidivism rate
recidivism reentry facilities
Pennsylvania trainee starting salary was $46,986, rising to $49,156 as officer Statistic
Pennsylvania DOC trainee starting salary was $46,986, rising to a $49,156 minimum as officer.
$46,986 USD vs. officer minimum salary
staffing budget
Obstacles to reentry in Georgia Finding
Georgia's thin reentry funding and high supervision caseloads are identified as obstacles.
reentry budget policy
Alabama saw 28% fewer resignations after staffing changes Statistic
Alabama saw 28% fewer resignations.
28%
staffing policy
Bastøy Prison population and staffing Statistic
Bastøy Prison is a low-security island prison holding ~115 inmates with about 69–72 staff, only 3–5 remaining overnight.
115 inmates
staffing facilities
Alabama correctional officers 28% less likely to resign after salary increases Statistic
The Alabama Commission on Evaluation of Services found that after March 2023 salary increases and a new Senior Correctional Officer classification, correctional officers were 28% less likely to resign.
28%
staffing budget policy
Colorado HB 26-1020 signed into law Legal fact
Colorado HB 26-1020 was signed by Governor Polis on March 26, 2026, and passed unanimously in both chambers. It requires police to issue a summons rather than arrest for Level 1 misdemeanor drug possession when a colorimetric field test is used, and…
legal policy drugs
New Jersey Dignity Act independent oversight office cost ~$2.8M/year Statistic
New Jersey's Dignity Act independent oversight office cost ~$2.8M/year.
$2.8M USD per year
budget policy investigations
Halden Prison capacity and staffing Statistic
Halden Prison has a capacity of ~248–252 inmates with about 340 total staff as of 2012, declining to 236 by 2023.
236 staff vs. staff in 2012
staffing facilities
Alabama avoided $7.9M–$10M in voluntary-turnover costs since FY19 Statistic
Alabama DOC avoided $7.9M–$10M in voluntary-turnover costs since FY19 due to retention improvements.
$7.9M USD vs. upper estimate
staffing budget
Estimated annual false implications from colorimetric field tests Statistic
The Quattrone Center's January 2024 report estimated ~30,000 people are falsely implicated annually by colorimetric field tests.
30,000 people
legal drugs investigations
Colorado HB 26-1020 passed unanimously Legal fact
Colorado HB 26-1020 passed unanimously with bipartisan sponsorship.
legal policy drugs
Halden Prison build cost Statistic
Halden Prison's build cost was approximately $252 million.
$252.0M USD
budget facilities
Alabama average annual correctional officer hires fell 50% after pay program Statistic
Average annual hires fell 50% (from 242 pre-program to 123), and correctional-officer staff declined 55% over nine years.
50%
staffing trend
Colorimetric field tests as a leading factor in wrongful convictions Quote
The Quattrone Center's report called colorimetric field tests 'one of the largest, if not the largest, known contributing factor to wrongful arrests and convictions in the United States.'
legal drugs investigations
Proposed Georgia Little Scandinavia pilot would be a 64-bed unit with 1:8 staffing and ~$300K renovation Policy
A proposed Georgia 'Little Scandinavia' RCT at one medium-security facility would be a 64-bed unit, lottery assignment, 1:8 staffing, ~$300K renovation.
facilities operations policy budget
Pennsylvania Little Scandinavia unit staffing ratio Statistic
The 'Little Scandinavia' unit at SCI Chester runs a 1:8 officer-to-resident ratio versus 1:128 in the rest of the facility.
8 residents per officer vs. rest of facility ratio
staffing conditions facilities
Alabama correctional-officer staff declined 55% over nine years Statistic
Correctional-officer staff declined 55% over nine years in Alabama.
55%
staffing trend
Usage rate of colorimetric field tests in U.S. drug arrests Statistic
The Quattrone Center report noted the tests are used in roughly half of the 1.5 million annual U.S. drug arrests (2010–2019).
50%
legal drugs investigations
Recidivism definitions and windows differ across all sources Methodology note
Recidivism definitions and windows differ across every source (rearrest vs. reconviction vs. reincarceration; 2, 3, 5, and 8-year windows).
recidivism methodology
Little Scandinavia renovation cost Statistic
The renovation cost for the 'Little Scandinavia' unit was about $300,000–$310,000.
$310,000 USD
budget facilities
Alabama new trainee starting salary near $57,000 after March 2023 increases Statistic
Alabama new trainee starting salary near $57,000, up ~$20,000; 10% raises for current staff.
$57,000 USD
staffing budget
Prosecutors accepting guilty pleas without lab testing Statistic
The Quattrone Center report found that 89% of surveyed prosecutors accept guilty pleas without confirmatory lab testing.
89%
legal drugs investigations
Little Scandinavia and Amend programs report early, mostly non-causal results Methodology note
Little Scandinavia and the Amend programs report early, mostly non-causal results; researchers themselves stress this.
methodology operations
Little Scandinavia per-inmate daily cost comparison Statistic
The per-inmate/day cost for the 'Little Scandinavia' unit is roughly 1.5 times that of double-celling.
1.5x times double-celling cost
budget conditions
North Carolina average correctional officer vacancy rate around 30% Statistic
North Carolina Department of Adult Correction reported an average vacancy rate around 30%, with some prisons near 60%.
30% vs. some prisons near
staffing facilities
Error rates for colorimetric field tests Statistic
The Quattrone Center report noted that error rates for colorimetric field tests run as high as 38% in some contexts.
38%
legal drugs investigations
No rigorous recidivism/violence evaluation exists for Texas GRAD Data gap
No rigorous recidivism/violence evaluation exists for Texas GRAD; file an open-records request to TDCJ for before/after STG incident counts and post-completion outcomes.
data_gap violence recidivism gangs
Pennsylvania statewide prison violence increase 2024 Statistic
Pennsylvania state prisons saw about a 21.6% increase in violent incidents in 2024.
21.6%
violence trend
North Carolina Governor proposed 15% pay raise over biennium for correctional staff Policy
Governor Stein's FY2026-27 budget proposed a 15% pay raise over the biennium — outcome data pending.
staffing budget policy
Colorado DOC false-positive rate for field tests Statistic
The Colorado DOC's own false-positive rate for colorimetric field tests was about 33%.
33%
legal drugs investigations
Raw before/after incident counts not located for Arizona STG step-down Data gap
Raw before/after incident counts, number moved out of max custody, and recidivism not located for Arizona STG step-down; request ADCRR data.
data_gap violence recidivism gangs solitary
North Dakota solitary confinement reduction 2016-2020 Statistic
North Dakota achieved a 74.28% reduction in the use of solitary confinement between 2016 and 2020.
74.3%
solitary trend policy
Norway's staffing ratio is 1:1.1, adapted in Pennsylvania's Little Scandinavia at 1:8 Finding
Norway's 1:1.1 staffing and contact-officer model (adapted in Pennsylvania's Little Scandinavia at 1:8) reframes officers as mentors; the Brennan Center report describes the 'contact officer' role adapted from Norway.
staffing policy conditions
Fiscal note for Colorado HB 26-1020 Statistic
The fiscal note for Colorado HB 26-1020 indicated a $0 budget impact; each colorimetric test kit costs about $3.
$0.00 USD
budget legal drugs
Outcome data not located for Northern Ireland paramilitary separation Data gap
Outcome data not located for Northern Ireland paramilitary separation; consult the Northern Ireland Prison Service and academic literature.
data_gap violence operations
North Dakota solitary sanction rate reduction at JRCC Statistic
The monthly rate of solitary sanctions fell 99% at one prison (JRCC) in North Dakota.
99%
solitary trend facilities
U.S. prison population declined 25% between 2009 and 2021 Statistic
The U.S. prison population declined 25% between 2009 and 2021 even as violent crime reported to police fell to half its 1990s level by year-end 2024.
25%
demographics trend policy
Total exonerations in 2024 Statistic
The National Registry of Exonerations recorded 147 exonerations in 2024.
147 exonerations
legal investigations
Recidivism and resocialization-mandate outcome figures not located for Germany Data gap
Recidivism and resocialization-mandate outcome figures not located for Germany; consult the German Federal Statistical Office and the constitutional resocialization jurisprudence (Lebach).
data_gap recidivism legal
North Dakota solitary sanction rate reduction at NDSP Statistic
The monthly rate of solitary sanctions fell 59.1% at the North Dakota State Penitentiary (NDSP).
59.1%
solitary trend facilities
U.S. prison population grew nearly 700% between 1972 and 2009 Statistic
Between 1972 and 2009 the prison population had grown nearly 700%.
700%
demographics trend
Exonerations secured by Conviction Integrity Units in 2024 Statistic
In 2024, Conviction Integrity Units (CIUs) helped secure 62 exonerations.
62 exonerations
legal investigations
Raw violence/solitary-reduction numbers not located for Washington Amend program Data gap
Raw violence/solitary-reduction numbers not located for Washington Amend program; request Washington DOC data.
data_gap violence solitary
Oregon Resource Team disciplinary infraction reduction Statistic
Among Oregon Resource Team participants with at least three interactions, disciplinary infractions fell 55.7%.
55.7%
solitary violence policy
New York halved its prison population between 1999 and 2023 Statistic
Between 1999 and 2023, New York more than halved its prison population while its violent crime rate fell 34% (versus a 28% U.S. decline).
50%
demographics trend policy
Exonerations secured by Innocence Organizations in 2024 Statistic
In 2024, Innocence Organizations helped secure 53 exonerations.
53 exonerations
legal investigations
Some cost figures are secondary and internally inconsistent Methodology note
Some cost figures are secondary and internally inconsistent (e.g., a Halden per-inmate figure of '>$93,000' versus ~$127K–$129K national for 2018).
budget methodology
Oregon Resource Team assault reduction Statistic
Among Oregon Resource Team participants with at least three interactions, assaults fell 73.9%.
73.9%
violence solitary policy
New York violent crime rate fell 34% versus 28% U.S. decline (1999-2023) Statistic
New York violent crime rate fell 34% (versus a 28% U.S. decline) between 1999 and 2023.
34% vs. U.S. decline
trend policy
Average years lost by exonerees in 2024 Statistic
Exonerees in 2024 lost an average of 13.5 years, totaling nearly 1,980 years lost collectively.
13.5 years
legal investigations
Several source URLs are secondary reporting; GPS should pull primary documents Methodology note
Several source URLs are secondary reporting used to locate outcomes; where possible GPS should pull the underlying primary documents (TDCJ/ADCRR data via open records, the USSC report, the Quattrone Center report, and the peer-reviewed Health & Just…
methodology data_gap
Oregon Resource Team prior solitary admissions average Statistic
Oregon Resource Team participants averaged 9.7 prior admissions to solitary.
9.7 admissions
solitary
New York City serious-crime rate fell 58% while incarceration rate fell 55% (1996-2014) Statistic
New York City: between 1996 and 2014 the serious-crime rate fell 58% while the combined jail and prison incarceration rate fell 55%; residents behind bars declined by 31,120.
58% vs. incarceration rate decline
demographics trend policy
Official misconduct in 2024 exonerations Statistic
Official misconduct featured in at least 104 of the 147 exoneration cases in 2024.
104 cases vs. Total exonerations in 2024
legal investigations corruption
Oregon Behavioral Health Unit use-of-force reduction Statistic
Staff use-of-force in the Oregon Behavioral Health Unit dropped nearly 86% from 2016 to 2021.
86%
violence mental_health trend
New York City residents behind bars declined by 31,120 (1996-2014) Statistic
New York City residents behind bars declined by 31,120 between 1996 and 2014.
31,120 people
demographics trend
Total documented exonerations since 1989 Statistic
Since 1989, the National Registry of Exonerations has documented 3,646 exonerations.
3,646 exonerations
legal investigations
Alabama staff resignations decline but hiring collapse Statistic
Alabama cut resignations 28% but still saw staff decline because hiring collapsed.
28%
staffing trend
New York drug imprisonment fell 86-87% from 1999 peak Statistic
People imprisoned for drugs fell about 86–87% from the 1999 peak.
86% vs. upper estimate
drugs demographics trend policy
Philadelphia DA CIU exonerations and years incarcerated Statistic
The Philadelphia DA's CIU has exonerated dozens of people collectively incarcerated over 1,160 years since 2018.
1,160 years
legal investigations
Arizona gang member disciplinary violation rate comparison Statistic
Gang members in Arizona committed disciplinary violations at two to three times the rate of other prisoners.
2.0x times vs. upper range of violation rate multiplier
gangs violence
New York closed more than a dozen prisons Statistic
New York closed more than a dozen prisons following population reductions.
12 prisons
facilities policy budget
Obstacles to CIUs in Georgia Finding
Georgia lacks a robust statewide CIU and discovery-reform infrastructure; the named obstacle is prosecutorial resistance and the recent election of prosecutors who deprioritize CIUs.
legal policy investigations
Texas GRAD program lack of rigorous evaluation Data gap
The leading academic study on Texas GRAD explicitly does not seek to answer if the renunciation process works, and no rigorous recidivism or before/after violence evaluation exists.
gangs data_gap policy
New York and New Jersey reduced prison populations 26% between 1999 and 2012 Statistic
New York and New Jersey reduced prison populations 26% between 1999 and 2012 while the national state prison population rose 10%.
26% vs. national state prison population change
demographics trend policy
Little Scandinavia preliminary violence outcomes Finding
Since opening, the 'Little Scandinavia' unit has had only one incident categorized as 'violent' and recorded almost no violence in 2024.
violence conditions facilities
New Jersey holds 37% fewer people than in 2019 Statistic
New Jersey now holds 37% fewer people than in 2019.
37%
demographics trend policy
Little Scandinavia expansion announcement Policy
In March 2025, the Pennsylvania DOC announced the expansion of the 'Little Scandinavia' model to three additional facilities.
policy conditions facilities
California downsized prison population 23% between 2006 and 2012 Statistic
California downsized 23% between 2006 and 2012 (national decline just 1%); its violent crime fell 21% versus a 19% national decline.
23% vs. national decline
demographics trend policy
Solitary confinement requires twice as many guards Finding
Solitary confinement 'requires twice as many guards' according to the document's analysis of obstacles for Georgia.
solitary staffing budget
Five states have cut prison populations over 50% from peak Statistic
Alaska, Connecticut, New Jersey, New York, and Vermont have each cut prison populations over 50% from peak.
50%
demographics trend policy
Elderly release laws are barely used Finding
Elderly release is low-risk and high-savings, but the laws exist almost everywhere and are barely used.
reentry policy legal
Netherlands prison rate dropped from 94 to 51 per 100,000 (2005-2016) Statistic
The corrected prison rate dropped from 94 per 100,000 (2005) to 51 (2016), a ~46% decline, accompanied by falling crime; the Netherlands closed roughly half its prisons and has an incarceration rate around 54–61 per 100,000, about half the UK's.
51 per 100,000 vs. 2005 rate
demographics trend policy
Decarceration without crime increase is best-documented finding Finding
Decarceration without crime increases is the best-documented finding in the file, with examples from New York, New Jersey, California, and the Netherlands.
decarceration crime trend
Netherlands closed roughly half its prisons Statistic
The Netherlands closed roughly half its prisons following population decline.
50%
facilities policy budget
Washington state ombuds office model Policy
Washington state stood up a statutorily independent ombuds office reporting to the governor.
oversight policy
New Jersey ombudsperson office model Policy
New Jersey runs a fully independent corrections ombudsperson office reporting to the governor.
oversight policy
Germany and Netherlands resocialization mandates Legal fact
Both Germany and the Netherlands place resocialization at the legal core of imprisonment.
legal reentry policy
Recidivism definition variability across jurisdictions Methodology note
For every recidivism figure, the definition (rearrest / reconviction / reincarceration) and follow-up window are specified where the source provided them, because these vary and make raw cross-jurisdiction comparison misleading.
methodology recidivism data_gap
Nordic model transferability caveat Methodology note
Nordic and Western European outcomes reflect much shorter sentences, far smaller populations, and stronger social-welfare baselines. They establish that measurable alternatives exist — not that they transplant one-to-one to Georgia.
methodology policy

Sources

49 cited sources backing this research.

Secondary Journalism
The Philadelphia Citizen (Apr 14, 2025)
Secondary Official report
Vera Institute of Justice
Secondary Official report
Sentencing Project (Nov 1, 2025)
Primary Official report
HM Inspectorate of Prisons (Jan 1, 2025)
Primary Academic
Marie L. Griffin, Ph.D. — Arizona State University / National Institute of Justice (Jan 1, 2002)
Secondary Journalism
Solitary Watch (Jan 1, 2018)
Secondary Journalism
Britton Nagy — Pulitzer Center (Jan 1, 2014)
Primary Academic
Harvard Kennedy School
Secondary Official report
Brennan Center March 2026 report on independent prison oversight
Brennan Center for Justice (Mar 1, 2026)
Secondary Press release
Center for Constitutional Rights (Jan 1, 2016)
Primary Legislation
Washington State Legislature
Secondary Data portal
Civil Rights Litigation Clearinghouse
Secondary Journalism
Reason Foundation (Jan 1, 2026)
Primary Legislation
Colorado General Assembly (Jan 1, 2026)
Primary Gps original
Comparative Solutions Evidence Base: Prison Reforms That Have Demonstrably Worked
GPS Research Library Collection — Georgia Prisoners' Speak
Primary Official report
Alabama Commission on the Evaluation of Services (Jan 1, 2024)
Primary Press release
Pennsylvania Department of Corrections (Jan 1, 2025)
Primary Official report
State of New Jersey
Secondary Official report
The Sentencing Project
Primary Official report
Texas Department of Criminal Justice
Secondary Official report
Brennan Center for Justice (Jan 1, 2013)
Tertiary Academic
Wikipedia (Jan 1, 2024)
Secondary Journalism
The Crime Report (Jan 1, 2019)
Secondary Press release
ACLU of New Jersey (Jan 1, 2020)
Primary Official report
Washington Office of Corrections Ombuds
Primary Official report
National Registry of Exonerations (Jan 1, 2024)
Primary Data portal
National Registry of Exonerations
Secondary Official report
National Resource Center for Correctional Oversight
Primary Official report
U.S. Sentencing Commission (Jul 26, 2022)
Primary Official report
Ram Subramanian, Lauren-Brooke Eisen, et al. — Brennan Center for Justice (Mar 17, 2026)
Primary Official report
Ram Subramanian, Lauren-Brooke Eisen, Josephine Wonsun Hahn, Jinmook Kang, Ava Kaufman, and Brianna Seid — Brennan Center for Justice at New York University School of Law (Mar 1, 2026)
Primary Academic
Drexel University / University of Oslo
Primary Legal document
Center for Constitutional Rights (Sep 1, 2015)
Primary Official report
Texas Department of Criminal Justice (Jan 1, 2024)
Secondary Official report
Brennan Center for Justice (Mar 1, 2026)
Secondary Journalism
U.S. News & World Report (May 13, 2019)
Secondary Official report
National Resource Center for Correctional Oversight
Secondary Journalism
Berkeley Political Review (Jan 1, 2022)

Key Entities

Organizations, people, facilities, and other named entities referenced in this research.

ACLU [organization]
Alabama Department of Corrections [organization]
Alaska [organization]
Amend program [program]
Arizona Department of Corrections [organization]
Arizona Department of Corrections, Rehabilitation and Reentry [organization]
Arizona STG step-down [program]
Ashker v. Brown [case]
Ashker v. Governor of California [case]
Bastøy Prison [facility]
Brennan Center for Justice [organization]
California [organization]
California Department of Corrections and Rehabilitation [organization]
Colorado Department of Corrections [organization]
Colorado HB 26-1020 [legislation]
Connecticut [organization]
Dignity Act [legislation]
Georgia [organization]
Georgia Department of Corrections [organization]
Georgia Governor's Office [organization]
Georgia State Board of Pardons and Paroles [organization]
German Federal Statistical Office [organization]
German Prison System [organization]
Halden Prison [facility]
HM Inspectorate of Prisons [organization]
HMP Hindley [facility]
James River Correctional Center [facility]
Little Scandinavia Unit [program]
Lowdham Grange [facility]
Massachusetts Department of Correction [organization]
Michigan Department of Corrections [organization]
Michigan Vocational Village [program]
National Institute of Justice [organization]
National Registry of Exonerations [organization]
Netherlands [organization]
Netherlands Prison System [organization]
New Jersey [organization]
New Jersey Department of Corrections [organization]
New Jersey Dignity Act [legislation]
New Jersey Office of the Corrections Ombudsperson [organization]
New York [organization]
New York City [organization]
New York State Department of Corrections and Community Supervision [organization]
North Carolina Department of Adult Correction [organization]
North Dakota Department of Corrections and Rehabilitation [organization]
North Dakota State Penitentiary [facility]
Northern Ireland Prison Service [organization]
Norwegian Correctional Service [organization]
Oregon Department of Corrections [organization]
Pelican Bay State Prison [facility]
Pennsylvania Department of Corrections [organization]
Philadelphia District Attorney's Office Conviction Integrity Unit [organization]
Quattrone Center [organization]
Quattrone Center for the Fair Administration of Justice [organization]
Restoring Promise program [program]
SCI Chester [facility]
Second Substitute House Bill 1889 [legislation]
South Carolina Department of Corrections [organization]
South Woods State Prison [facility]
Texas Department of Criminal Justice [organization]
Texas GRAD [program]
U.S. Department of Justice [organization]
U.S. Sentencing Commission [organization]
United States [organization]
United States Sentencing Commission [organization]
Vera Institute of Justice [organization]
Vermont [organization]
Washington Department of Corrections [organization]
Washington Office of Corrections Ombuds [organization]
Washington State Department of Corrections [organization]

Related Topics

Research topics that draw on data from this collection.

Oversight & Accountability
Georgia's prison oversight architecture has failed at every level — legislative, judicial, executive, and administrative — producing a system where 142 documented homicides, a 50% staffing vacancy rate, and $634 million in emergency spending coexist with no meaningful accountability for the officials responsible. The Georgia Department of Corrections operates with near-total opacity, manipulates its own mortality data, collects millions in kickbacks from vendors it is supposed to regulate, and has twice required federal court intervention — first in 1972 and again in 2024 — because internal oversight mechanisms do not function. What exists in Georgia is not a flawed oversight system; it is the systematic absence of one.
4,618 data points
Parole & Sentencing
Georgia's parole system acts as a critical but constrained release valve, with the Parole Board granting release to just over a quarter of eligible cases while the state's prison population ages and violence surges. Despite evidence that parolees successfully complete supervision at a 72% rate and annual cost avoidance from parole exceeds $343 million, harsh sentencing patterns and risk-averse parole decisions continue to drive mass incarceration at a cost of approximately $1.8 billion per year.
1,980 data points
Policy & Advocacy
Georgia's $1.8 billion prison system delivers near-starvation nutrition, rampant violence, and record deaths while extracting millions from incarcerated families through kickback-laden contracts. Decades of truth-in-sentencing incentives and corporate vendor lock-in have built an extraction economy that diverts resources from rehabilitation, yet evidence from other states and nations demonstrates that humane, purpose-driven models dramatically reduce harm and recidivism at lower costs. Advocacy must target the nexus of fiscal waste, policy failure, and Eighth Amendment violations to force systemic change.
3,344 data points
Prison Labor & Economics
Georgia's prison system operates as a multilayered economic extraction machine, from near-$0 wages for incarcerated workers in defiance of the 13th Amendment's exception clause to commissary markups reaching 1,150% and a $1.4 billion communications duopoly that exploits families. These mechanisms, built on a convict-leasing legacy, force incarcerated people and their loved ones into a cycle of debt and poverty that extends far beyond the prison walls — while Georgia taxpayers fund a $1.8 billion system and prisoners generate billions in goods and services without meaningful compensation.
2,417 data points
Recidivism & Reentry
Georgia releases 14,000–16,000 people from its prisons each year into communities with minimal preparation, support, or resources — yet the state's official recidivism rate of 25–27% obscures a far grimmer reality: when technical violations, arrests, and extended measurement windows are factored in, the true return-to-incarceration rate approaches 50%. With 528,000 Georgia residents under criminal justice supervision and an incarceration rate of 881 per 100,000 — higher than any nation on earth except El Salvador — the state's failure to invest meaningfully in reentry is not merely a policy gap but a documented engine of mass incarceration costing taxpayers $1.8 billion annually.
1,553 data points
Reform Models & Programs
Georgia's prison system spends more than $1.8 billion annually while delivering rehabilitation outcomes that rank among the worst in the nation — a structural failure made visible by comparing GDC practices against evidence-based national models. From Scandinavian-inspired residential units to California's court-mandated programming overhaul, proven reform frameworks exist at scale; Georgia has largely refused to adopt them, even as its prisons recorded at least 100 homicides in 2024 and a recidivism rate that mirrors the national average of 76.6% rearrested within five years. This page synthesizes what works, what Georgia does instead, and the fiscal and human cost of that gap.
3,629 data points
Solitary Confinement
Georgia's use of solitary confinement and restrictive housing exposes prisoners to documented psychological devastation, racial disparity, and systemic neglect — conditions so severe that federal courts have imposed daily fines on the Georgia Department of Corrections for flagrant violations of its own settlement agreements. Georgia's Special Management Unit held 78% of its population in isolation for more than two years as of 2017, while staffing vacancies exceeding 70% at the state's largest facilities made meaningful oversight, programming, or humane treatment functionally impossible. The data, drawn from court records, federal investigations, and peer-reviewed research, reveals a system where isolation is used not as a last resort but as a default response — with predictable and measurable consequences for mental health, safety, and human dignity.
791 data points
Staffing Crisis
The Georgia Department of Corrections has lost more than half its correctional officer workforce in a decade, with systemwide vacancy rates now at 50%. This staffing collapse is the primary driver of record violence, surging deaths in custody, a spiraling contraband economy fueled by employee misconduct, and billions in reactive spending that has yet to reverse the crisis.
2,344 data points
Violence & Safety
Georgia’s prisons have become a killing field: 142 homicides documented by a federal DOJ investigation from 2018 to 2023, a 47% surge in prisoner death rates, and a staggering 77% increase in assaults on staff. A 50% correctional officer vacancy rate, the infiltration of thousands of cellphones and weapons, and an unprecedented $634 million spending injection have failed to stem the violence, while officials obscure the true death toll — GPS identified 100 homicides in 2024 alone, 52% higher than the state’s own count.
3,554 data points
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