Summary:
ZIP code 02739, which covers Mattapoisett on Massachusetts' South Coast, is served by a single public high school: Old Rochester Regional High, a grades 9–12 campus at 135 Marion Rd with 643 students in the Old Rochester district. Because only one high school operates here, there are no in-town peers to compare against, so the meaningful benchmarks are the district as a whole and the state of Massachusetts. The school reports a student-teacher ratio of 12.5, a graduation rate of 96.1% and a dropout rate of 0.7% for 2024–2025, and per-student spending of $18,403 for 2020–2021. Free/reduced-lunch percentages are not reported, so the economic makeup of the student body is unknown.
On MCAS Next Generation tests, Old Rochester Regional High scores above the Massachusetts average in every subject and year reported. In 2025–2026, 10th-grade ELA proficiency was 62.58% versus 45.48% statewide — a 17.10 percentage-point advantage — while 10th-grade Mathematics was 56.44% versus 43.73%, a 12.71-point edge. Science came in at 47.77% against 40.50% statewide (+7.27 points), and Biology End-of-Course at 46.51% against 37.68% (+8.83 points). Notably, the school's results are nearly identical to its district's: within 0.24 to 0.38 points in most subjects, and exactly the same in Science, which indicates the district's high-school figures are essentially this school's figures.
The most striking trend is improvement. ELA rose from 58.97% to 62.58% and Mathematics from 49.35% to 56.44% year over year, even as state scores slipped, widening the school's ELA lead from +8.31 to +17.10 points and its Math lead from +4.75 to +12.71 points. Science dipped from 50.68% to 47.77%, but the state fell further, so the school's relative advantage still grew. Reflecting those gains, the school's ranking climbed to 93 of 353 schools (74th percentile, 4 stars) in 2025–2026, up from 123 of 349 (65th percentile, 3 stars) the prior year and 117 of 348 in 2023–2024. The district itself ranks 107 of 351.
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