Summary:
Zip code 01746 contains one public high school, Holliston High, which serves grades 9–12, enrolls 809 students, and belongs to the Holliston district in Holliston, Massachusetts.
Holliston High is a top-tier Massachusetts high school by rank and has been steadily improving. In 2025–2026 it ranked 30th out of 353 high schools statewide, in the 92nd percentile with 5 stars, up from 60th of 348 in 2023–2024 and 38th of 349 in 2024–2025, gaining a star along the way. That latest rank is stronger than its own district's overall standing of 50th of 351 (86th percentile, 4 stars). Test proficiency in 2025–2026 was well above state averages in every reported subject: Math at 81.68%, ELA at 73.44%, Science at 72.97%, and Biology at 63.11% — respectively 37.95, 27.96, 32.47, and 25.43 percentage points above the state.
Math is the standout subject and improved year over year (79.03% to 81.68%), as did Science (70.33% to 72.97%), while ELA slipped slightly (76.6% to 73.44%) but remained roughly 28 points above the state. Completion outcomes are strong, with a 96.1% graduation rate and a 1.0% dropout rate in 2024–2025; graduation runs 1.0 percentage point above the district. The student-teacher ratio is 12.4, and per-student spending was $14,596 in 2020–2021. Two caveats are worth noting: free/reduced lunch data is not reported, and the 2024–2025 Physics All Grades result of 0% for both school and district, against 44.25% statewide, appears to be a reporting artifact or a case of no students assessed rather than a genuine instructional weakness.
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