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POLICE TRANSPARENCY NJInternal Affairs & Discipline Records

Report card

Princeton University Police

AnalysisA grade is interpretation, not a record. The records behind it stay one click away.

Grade B: Second-lowest fifth

On reported IA volume and discipline severity; see methodology

Peer group
Municipal police, 15-29 officers (61 agencies)
Combined standing
24th percentile of peers
Confidence
High confidence

How the grade is built

Three components, each a percentile within the peer group (higher = more reported volume or severity). The combined standing is their weighted mean, re-ranked among peers; the grade is the fifth of the peer group it lands in. Weights are an editorial choice, published on the methodology page.

IA volumeweight 40%

83rd

157.4 investigations per 100 officers (multi-year mean)

Internal affairs investigations per 100 reported officers, averaged over the years where the agency reported both figures.

Discipline severityweight 40%

11th

0.0 severity-weighted discipline per 100 officers, 2020-2025

Major discipline records weighted by sanction (termination 4, demotion 3, suspension 2, other 1) per 100 officers.

Allegation severityweight 20%

12th

1.65 mean severity tier (1 low - 4 critical)

Mean severity tier of IA allegations across 2021-2025, using the published tier map; unknown values excluded.

Volume trend

10520211502022181.8202315020242002025
Internal affairs investigations per 100 officers at Princeton University Police, by year
Internal affairs investigations per 100 officers at Princeton University Police, by year
20212022202320242025
105150181.8150200

Investigations per 100 reported officers, per year.[2][3][4][5][6]

The inputs, on the record

Sworn officers, 2025

12[1]

IA investigations, 2025

24[1]

Major discipline records

0

All years, 2020-2025

Terminations

0

All years, 2020-2025

PRINCETON UNIVERSITY POLICE200.0COUNTY MEDIAN, MUNICIPAL POLICE (13)133.3NJ MEDIAN, MUNICIPAL POLICE (447)125.6
Internal affairs investigations per 100 officers, 2025 (investigations per 100 sworn officers)
Internal affairs investigations per 100 officers, 2025 (investigations per 100 sworn officers)
Princeton University Police200.0
County median, municipal police (13)133.3
NJ median, municipal police (447)125.6

What this grade can and can't tell you

  • The underlying data is self-reported by agencies, one yearly snapshot at a time.
  • Allegations are not findings; many complaints end unfounded, exonerated, or not sustained.
  • There is no arrest, population, or call-volume denominator in this data, so nothing here is a per-capita misconduct rate.
  • A higher internal affairs volume is ambiguous: it can indicate more misconduct, or a more robust oversight and reporting culture. The grade weighs it anyway, because volume is what the record offers; that choice is published, not hidden.
  • The grade is one lens. Weights are a transparent editorial choice on the methodology page, and the records are always one click away.
See the underlying records

Questions and answers

What is Princeton University Police's police report card grade?
Princeton University Police receives a grade of B on this site, meaning its reported internal affairs volume and discipline severity place it in the 24th percentile of its peer group (municipal police agencies, 15-29 officers). The grade is analysis, not an official rating, and a higher volume can reflect more misconduct or a stronger reporting culture.
How is the report-card grade calculated?
The grade combines three components, each ranked within a peer group of the same agency type and size: internal affairs volume per officer (40%), sanction-weighted discipline severity (40%), and mean allegation severity (20%). The combined standing is re-ranked among peers, and the grade is the fifth of the peer group it falls in. Full method and weights are on the methodology page.

Sources

  1. [1]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 2298. Snapshot retrieved 2026-06-09. ↩
  2. [2]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 265. Snapshot retrieved 2026-06-09. ↩
  3. [3]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1283. Snapshot retrieved 2026-06-09. ↩
  4. [4]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1786. Snapshot retrieved 2026-06-09. ↩
  5. [5]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 768. Snapshot retrieved 2026-06-09. ↩
  6. [6]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 2298. Snapshot retrieved 2026-06-09. ↩