Summary:
Williamstown, Massachusetts is served by two public schools — Mt Greylock Regional High (grades 7–12) and Williamstown Elementary (grades PK–6) — which together enroll 946 students in the Mount Greylock district, effectively covering the town's entire K–12 pipeline.
Both schools rank in the top quarter of Massachusetts schools. Mt Greylock Regional High places 69th of 353 high schools (80th percentile, four stars), with a 95.8% graduation rate and a 4.2% dropout rate; Williamstown Elementary places 227th of 899 elementary schools (75th percentile, four stars). Of the 25 subject-and-grade results published for 2025–26, 24 beat the state average. Williamstown Elementary's 3rd-grade results are the strongest in the file — 79.25% proficient in math and 75.47% in ELA, both more than 30 points above the state — and its all-grade ELA (60.63%) is the highest all-grade subject score at either school. The high school's best result is 10th-grade math at 67.44%, 23.71 points above the state, with 8th grade its strongest grade band. Notably, both campuses outscore the district averages, so Williamstown's schools are the district's high performers rather than its average.
Parents should know the two schools essentially traded places year over year. In 2024–25 the elementary beat the district in math and science while the high school lagged; in 2025–26 the high school rose +14.56 points in math and +12.86 in science, while the elementary fell below the district in both. The specific concerns are narrow: 5th-grade math at Williamstown Elementary (32.69%) is the only below-state result in the file, elementary science dropped 13.46 points, and the high school's thinnest margins are in physics and 10th-grade science. Spending is high at both schools ($20,369 high school; $21,340 elementary), and the elementary runs smaller classes (10.4 vs. 11.4 students per teacher).
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