Summary
Newton South High in Newton Centre, MA, is a large public comprehensive high school serving grades 9–12 with 1,898 students, part of the Newton district. In 2025–2026 it ranked 23rd of 353 Massachusetts high schools (93rd percentile, 5 stars) — still a top-decile school, though below its 10th-place ranking in 2023–2024 and 12th in 2024–2025.
Locally, Newton South was essentially tied with Newton North High (22nd) and slightly behind Needham High (11th) and Brookline High (14th), while far ahead of Watertown High (135th) and Boston schools such as English High School and Brighton High School. Completion is its clearest edge: 98.7% graduation and 0.9% dropout, better than Newton North (94.8%, 1.9%) and Brookline (96.2%, 1.6%), and close to Needham (99.0%, 0.5%). On 2025–2026 MCAS, 10th-grade proficiency was 73.42% in ELA, 80.73% in math, 75.84% in science, and 78.06% in physics — all far above state averages.
The main area to watch is ELA, where Newton South scored below both the Newton district average (73.42% vs. 74.71%) and Newton North, Brookline, and Needham — a reversal from prior years, when it was at or above the district. Math and physics were comparative strengths, beating Newton North and the district, though Needham and Brookline posted higher math scores. Science fell sharply over three years (87.02% to 75.84%), mirroring a statewide decline. Subgroup effectiveness is generally strong, with special education students at the 94th percentile and low-socioeconomic-status students at the 85th percentile, though rankings vary by group. Notably, the school achieves these results with moderate resources — an 11.6 student-teacher ratio and $22,578 per student in 2020–2021 — while some higher-spending schools post much lower outcomes. Free/reduced-price lunch data was unavailable, so economic-disadvantage comparisons could not be made.
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