School districts, elementary or secondary · Connecticut

Mary Morrisson School

Groton, CT · ~62 workers · 4 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
8.2
Avg TCR
1.4
Industry avg
0
Fatalities
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The verdict

Mary Morrisson School runs at 586% of its industry's injury rate - far more dangerous than the typical School districts, elementary or secondary workplace, earning a grade F.

Mary Morrisson School: 8.2 TCR = 586% of School districts, elementary or secondary BLS 1.4 · 4y Form 300A (see methodology below)

Mary Morrisson School safety composite

Mary Morrisson School scores strongest on fatalities (safer than 50% of same-industry peers) and weakest on total case rate (tcr) (safer than 16%), 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).

F

28/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 8.21 per 100 workers

Safer than 16% of industry peers

DART rate
F 3.12 per 100 workers

Safer than 25% 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

−11.5

2018→2021

Mary Morrisson School injury rate improved

Mary Morrisson School's TCR fell 11.5 from 14.7 in 2018 to 3.1 in 2021. Peak filing year was 2018 at 14.7 TCR. In 2021, DART was 0.38× this establishment's average TCR (severity share of cases).

2018=14.7 · 2019=11.2 · 2020=3.8 · 2021=3.1

OSHA ITA Form 300A scorecard

Establishment book 611110 · Groton, CT ABOVE-IND · SMALL

Grade F · TCR 8.2 · 586% of ind

  • DART 3.1 DART
  • RANK #278/381
  • PHOTO KITTY HAWK ELEMENTARY
  • BOOK 4y book
  • INJ 17 inj
  • SIZE ~62 FTE

Nearest TCR peer: KITTY HAWK ELEMENTARY (0.0 TCR gap)

Read with this employer → · Industry book → · Connecticut employers → · Look up another →

Mary Morrisson School in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Mary Morrisson School averages 8.2 TCR (586% of the School districts, elementary or secondary BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Mary Morrisson School TCR series: 2018=14.7 · 2019=11.2 · 2020=3.8 · 2021=3.1 · BLS 1.4

Where Mary Morrisson School falls in its industry

3,374 School districts, elementary o establishments

Safer than 16% of graded establishments in this industry, whose median TCR is 3.8.

More dangerous than peersSafer than peers

Narrower to Connecticut alone (the establishments it most directly competes with for workers and contracts): ranked #278 safest of 381 School districts, elementary o employers in Connecticut.

Mary Morrisson School (62 employees, TCR 8.2) among 29 same-industry peers, split at the industry median of 76 employees and a TCR of 3.8 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 02,0004,0006,0008,00010,000 0510152025 Average employees Total Case Rate Mary Morrisson School
Mary Morrisson School (62 employees, TCR 8.2) among 29 same-industry peers, split at the industry median of 76 employees and a TCR of 3.8

Mary Morrisson School has fewer employees than the School districts, elementary or secondar 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
2021 3.1 3.1 1 0 0
2020 3.8 3.8 2 0 0
2019 11.2 9.4 6 0 0
2018 14.7 9.2 8 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

611110 · CT · Groton

3,374 School districts, elementary or secondary employers nationwide with a credible TCR · 7,008 rated employers in Connecticut with headcount on file · 67 employers in Groton, 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 KITTY HAWK ELEMENTARY 8.2 TCR
NAICS-TCR Prescott Elementary School 8.2 TCR
NAICS-TCR 012 - Chapel Hill 7th 8th Grade Center 8.2 TCR
NAICS-TCR Minneota Elementary 8.2 TCR
STATE-SIZE Bartlett Brainard Eacott 62 FTE
STATE-SIZE NPL East LLC - Connecticut 62 FTE
STATE-SIZE 16-CT 62 FTE
STATE-SIZE Botanical Extract Manufacturer 62 FTE
CITY-NEAR Electric Boat, Groton, CT. 15,116 FTE
CITY-NEAR General Dynamics Electric Boat 12,075 FTE
CITY-NEAR Pfizer Inc 3,201 FTE
CITY-NEAR University of Connecticut- Avery Point Campus 314 FTE
NAT-TCR Indiana 8.2 TCR
NAT-TCR East Main 8.2 TCR
NAT-TCR Coventry Meadows 8.2 TCR
NAT-TCR BOS-SCS 8.2 TCR
NAT-SIZE Darling Ingredients Inc Coldwater 62 FTE
NAT-SIZE Global Welding Services, Inc. 62 FTE
NAT-SIZE Sutter Health System Office (470-FOLSOM) 62 FTE
NAT-SIZE Ports America Boston 62 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: 2021, 2020, 2019, 2018. 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.