High schools · Connecticut
Mark T Sheehan High School
Wallingford, CT · ~119 workers · 9 years of OSHA Injury Tracking Application data.
- F
- Failing Safety Record
- 4.1
- Avg TCR
- 1.4
- Industry avg
- 0
- Fatalities
The verdict
Mark T Sheehan High School runs at 296% of its industry's injury rate - far more dangerous than the typical High schools workplace, earning a grade F.
Mark T Sheehan High School: 4.1 TCR = 296% of High schools BLS 1.4 · 9y Form 300A (see methodology below)
Mark T Sheehan High School safety composite
Mark T Sheehan High School scores strongest on fatalities (safer than 50% of same-industry peers) and weakest on dart rate (safer than 13%), 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).
35/100
Percentile-weighted across 3 of 3 measures
- Total Case Rate (TCR)
- D 4.14 per 100 workers
Safer than 45% of industry peers
- DART rate
- F 5.34 per 100 workers
Safer than 13% 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%).
Rising injury rate
Mark T Sheehan High School: 2.5 → 5.3 TCR
Peak year 2018 @ 1242.2 TCR · DART/TCR 1.29× in 2024
Mark T Sheehan High School's TCR rose 2.8 from 2.5 in 2016 to 5.3 in 2024. Peak filing year was 2018 at 1242.2 TCR. In 2024, DART was 1.29× this establishment's average TCR (severity share of cases).
OSHA ITA Form 300A scorecard
Establishment book 611110 · Wallingford, CT ABOVE-IND · MID
Grade F · TCR 4.1 · 296% of ind
- DART 5.3 DART
- RANK #149/381
- PHOTO Dakota Valley Learni…
- BOOK 9y book
- INJ 25 inj
- SIZE ~119 FTE
Nearest TCR peer: Dakota Valley Learning Center (0.0 TCR gap)
Read with this employer → · Industry book → · Connecticut employers → · Look up another →
Mark T Sheehan High School in the TCR neighbourhood
Average Total Case Rate among this establishment and nearest same-industry peers
- This site
Mark T Sheehan High School
4.1 TCR
- Dakota Valley
Dakota Valley Learning Center
4.1 TCR
- Southern Orego
Southern Oregon ESD
4.1 TCR
- ISD 750 Rocori
ISD 750 Rocori Middle & High Schools
4.1 TCR
- ISD 659 High S
ISD 659 High School
4.1 TCR
What this shows Mark T Sheehan High School averages 4.1 TCR (296% of the High schools BLS benchmark).
Mark T Sheehan High School TCR series: 2016=2.5 · 2017=8.7 · 2018=1242.2 · 2019=2.5 · 2020=2.7 · 2021=6.7 · 2022=3.1 · 2023=1.6 · 2024=5.3 · BLS 1.4
Where Mark T Sheehan High School falls in its industry
3,374 High schools establishmentsSafer than 45% of graded establishments in this industry, whose median TCR is 3.8.
Narrower to Connecticut alone (the establishments it most directly competes with for workers and contracts): ranked #149 safest of 381 High schools employers in Connecticut.
Mark T Sheehan High School has more employees than the High schools median and a higher 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 | Illnesses | Fatalities |
|---|---|---|---|---|---|
| 2024 | 5.3 | 5.3 | 3 | 0 | 0 |
| 2023 | 1.6 | 1.6 | 1 | 0 | 0 |
| 2022 | 3.1 | 3.1 | 2 | 0 | 0 |
| 2021 | 6.7 | 4.0 | 5 | 0 | 0 |
| 2020 | 2.7 | 1.3 | 2 | 0 | 0 |
| 2019 | 2.5 | 2.5 | 2 | 0 | 0 |
| 2018 | 1242.2 | 0.0 | 1 | 0 | 0 |
| 2017 | 8.7 | 2.5 | 7 | 0 | 0 |
| 2016 | 2.5 | 1.3 | 2 | 0 | 0 |
OSHA ITA peer cross-reference
Establishment peer ledger
611110 · CT · Wallingford
3,374 High schools employers nationwide with a credible TCR · 7,008 rated employers in Connecticut with headcount on file · 136 employers in Wallingford, CT · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.
| Rel | Establishment | Metric |
|---|---|---|
| NAICS-TCR | Dakota Valley Learning Center | 4.1 TCR |
| NAICS-TCR | Southern Oregon ESD | 4.1 TCR |
| NAICS-TCR | ISD 750 Rocori Middle & High Schools | 4.1 TCR |
| NAICS-TCR | ISD 659 High School | 4.1 TCR |
| STATE-SIZE | Michels Power- CT | 119 FTE |
| STATE-SIZE | TIGHITCO Inc Aerostructures Group | 119 FTE |
| STATE-SIZE | The Safety Zone | 119 FTE |
| STATE-SIZE | Highland Park Market Glastonbury | 119 FTE |
| CITY-NEAR | Amazon Transportation Services : BDL5 | 1,386 FTE |
| CITY-NEAR | Gaylord Hopital | 986 FTE |
| CITY-NEAR | Amazon.com Services LLC - BDL5 | 956 FTE |
| CITY-NEAR | DDS South Region | 606 FTE |
| NAT-TCR | Channel Energy Center | 4.1 TCR |
| NAT-TCR | Perry Hall Service Center | 4.1 TCR |
| NAT-TCR | Live Turkey - California MO Hatchery | 4.1 TCR |
| NAT-TCR | Avera Behavioral Health Hospital | 4.1 TCR |
| NAT-SIZE | Fisher Auto Parts - PAWHSE | 119 FTE |
| NAT-SIZE | Merrill | 119 FTE |
| NAT-SIZE | Towlift Cleveland | 119 FTE |
| NAT-SIZE | Calcasieu Refining Company | 119 FTE |
Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →
Read our methodology - how this data is sourced, computed, and verified.