Summary:
Groton, Massachusetts is served by a single public high school in this dataset — Groton Dunstable Regional — which enrolls 659 students in grades 9–12 and belongs to the Groton-Dunstable district, itself ranked 34th of 351 Massachusetts districts at the 90th percentile with 5 stars. Because there is only one high school, all city-level analysis is school-level analysis.
Academically, the school compares favorably with state averages on every reported MCAS Next Generation test. In 2025–2026, 10th graders reached 75.0% proficiency in Mathematics versus 43.73% statewide (a 31.27-point gap), 69.4% in English Language Arts versus 45.48% statewide, 65.63% in Science versus 40.5%, and 58.82% in Biology End of Course versus 37.68%. Math is the standout strength. ELA slipped 6.31 points from 75.71% in 2024–2025 to 69.4% in 2025–2026 — worth monitoring, though still far above the state. In every subject and year, the school also edged out its own district by a small margin, typically under about 1.5 percentage points.
Outcomes are strong: a 97.5% graduation rate in 2024–2025, above the district's 95.3%, and a 0.0% dropout rate matching the district's. Rank history shows stability — 4 stars in each of the last three reported years, placing it among the top 11–14% of Massachusetts high schools (38th of 348 in 2023–2024, 50th of 349 in 2024–2025, and 45th of 353 in 2025–2026). Context figures include a 13.7:1 student-teacher ratio and $17,906 per-student spending in 2020–2021. The free/reduced-lunch percentage is not populated and should be read as unknown, not as zero.
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