Summary:
Holliston has one high school in this data set: Holliston High, which serves grades 9–12 with 809 students and is part of the Holliston district. Because it is the only high school listed here, every high-school-level finding below describes that school.
Holliston High is on a clear upward path. It ranked 60th of 348 high schools in 2023–2024, 38th of 349 in 2024–2025, and 30th of 353 in 2025–2026 — a move from the 83rd to the 92nd percentile and from 4 stars to 5 stars. Its 2025–2026 MCAS Next Generation proficiency rates sit far above the state: ELA 73.44% vs 45.48%, Mathematics 81.68% vs 43.73%, Science 72.97% vs 40.5%, and Biology End of Course 63.11% vs 37.68%. The school's results also track very closely to the district's, within about one point in each subject, meaning the district's high-school results largely reflect this school. Between 2024–2025 and 2025–2026, Mathematics and Science both improved while the state declined, and although ELA slipped from 76.6% to 73.44%, the state fell further, so the school's relative standing stayed strong.
Completion outcomes are strong: a 96.1% graduation rate, slightly above the district's 95.1%, and a 1.0% dropout rate matching the district. Resource context includes a 12.4 student-teacher ratio and per-student spending of $14,596 in 2020–2021. Two caveats are worth noting. Physics All Grades for 2024–2025 is reported at 0% proficient for both the school and district, versus 44.25% statewide — a striking outlier that likely reflects a very small or non-representative cohort and should be verified. Also, the free/reduced lunch percentage is blank in this extract, so socioeconomic context could not be analyzed.
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