High School - Public · Connecticut

Brien McMahon High School

Name: Brien McMahon High School Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Norwalk, CT · ~266 workers · 7 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

B
Good Safety Record: 1.0
Avg TCR: 1.4
Industry avg: 0
Fatalities

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The verdict

Brien McMahon High School runs at 72% of its industry's injury rate - safer than the typical High School - Public workplace, earning a grade B.

Brien McMahon High School: 1.0 TCR = 72% of High School - Public BLS 1.4 · 7y Form 300A (see methodology below)

Brien McMahon High School safety composite

Brien McMahon High School scores strongest on total case rate (tcr) (safer than 93% of same-industry peers) and weakest on fatalities (safer than 50%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

70/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): A 1.01 per 100 workers

Safer than 93% of industry peers
DART rate: C 0.35 per 100 workers

Safer than 57% of industry peers
Fatalities: D 0

Safer than 50% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

TCR Δ

−4.4

2016→2022

Brien McMahon High School injury rate improved

Brien McMahon High School's TCR fell 4.4 from 5.1 in 2016 to 0.7 in 2022. Peak filing year was 2016 at 5.1 TCR. In 2022, DART was 0.35× this establishment's average TCR (severity share of cases).

2016=5.1 · 2017=0.0 · 2018=0.5 · 2019=0.4 · 2020=0.0 · 2021=0.4 · 2022=0.7

OSHA ITA Form 300A scorecard

Establishment book 611110 · Norwalk, CT AT/BELOW-IND · MID

Grade B · TCR 1.0 · 72% of ind

DART 0.3 DART
RANK #16/381
PHOTO Forest Elementary
BOOK 7y book
INJ 15 inj
SIZE ~266 FTE

Nearest TCR peer: Forest Elementary (0.0 TCR gap)

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This site

1
Forest Element

1
Twin Lake Elem

1
ISD 709 Lester

1
Monroe Townshi

1

What this shows Brien McMahon High School averages 1.0 TCR (72% of the High School - Public BLS benchmark).

Brien McMahon High School TCR series: 2016=5.1 · 2017=0 · 2018=0.5 · 2019=0.4 · 2020=0 · 2021=0.4 · 2022=0.7 · BLS 1.4

Where Brien McMahon High School falls in its industry

3,374 High School - Public establishments

Safer than 93% of graded establishments in this industry, whose median TCR is 3.8.

Grade B

More dangerous than peersSafer than peers

Narrower to Connecticut alone (the establishments it most directly competes with for workers and contracts): ranked #16 safest of 381 High School - Public employers in Connecticut.

Brien McMahon High School (266 employees, TCR 1.0) among 29 same-industry peers, split at the industry median of 76 employees and a TCR of 3.8

Brien McMahon High School has more employees than the High School - Public median and a lower injury rate than the industry's median TCR of 3.8. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year	TCR	DART	Injuries
2022	0.7	0.3	2
2021	0.4	0.4	1
2020	0.0	0.0	0
2019	0.4	0.4	1
2018	0.5	0.5	1
2017	0.0	0.0	0
2016	5.1	4.1	10

OSHA ITA peer cross-reference

Establishment peer ledger

611110 · CT · Norwalk

3,374 High School - Public employers nationwide with a credible TCR · 7,008 rated employers in Connecticut with headcount on file · 140 employers in Norwalk, CT · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel	Establishment	Place	Metric
NAICS-TCR	Forest Elementary	FARMINGTON HILLS, MI	1.0 TCR
NAICS-TCR	Twin Lake Elementary School	ELK RIVER, MN	1.0 TCR
NAICS-TCR	ISD 709 Lester Park Elementary School	DULUTH, MN	1.0 TCR
NAICS-TCR	Monroe Township High School	MONROE TOWNSHIP, NJ	1.0 TCR
STATE-SIZE	United Natural Foods Inc	DAYVILLE	266 FTE
STATE-SIZE	10317 Fairfield	FAIRFIELD	266 FTE
STATE-SIZE	226_307	WATERBURY	266 FTE
STATE-SIZE	Bridgeport Corretional Center	BRIDGEPORT	266 FTE
CITY-NEAR	Norwalk Hospital	Norwalk	1,595 FTE
CITY-NEAR	Norwalk Public Schools	Norwalk	1,183 FTE
CITY-NEAR	WLWAH	Norwalk	954 FTE
CITY-NEAR	Atlantic Coast Enterprises, LLC	Norwalk	689 FTE
NAT-TCR	Kuehne + Nagel Inc. (IAD-6358)	Sterling, VA	1.0 TCR
NAT-TCR	Office	Hopkins, MI	1.0 TCR
NAT-TCR	Wilson McShane, Bloomington	Bloomington, MN	1.0 TCR
NAT-TCR	2967-IL115	Mt. Prospect, IL	1.0 TCR
NAT-SIZE	Spokane Bakery	Spokane Valley, WA	266 FTE
NAT-SIZE	FG Plant - Moses Lake	Moses Lake, WA	266 FTE
NAT-SIZE	5166 Martinsville Assembly	Ridgeway, VA	266 FTE
NAT-SIZE	Western Allied Mechanical	Menlo Park, CA	266 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2022, 2021, 2020, 2019, 2018, 2017, 2016. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.