Summary:
Braintree, Massachusetts is served by nine public schools — six elementary schools (K–4), two middle schools (5–8), and one high school (9–12) — enrolling 5,209 students in total. The Braintree district ranks 82nd of 351 Massachusetts districts, the 77th percentile, with 4 stars, and most of its schools score above the state average. Note that free/reduced-lunch percentages are not reported for any school here, so economic context is unknown rather than a weakness.
The strongest performers stand out clearly. South Middle School is the leading middle school, ranked 84th of 478 (82nd percentile, 4 stars), with stable rankings over three years and 2025–26 proficiency above district and state in ELA (54.63), Math (60.47), Science (64.94), and Civics (47.95); its 5th-grade Science score of 73.01 is among the highest in the data. Hollis (87th percentile, 4 stars) has the highest all-grade ELA of any Braintree school at 66.14, and Mary E Flaherty School (85th percentile, 4 stars) is close behind at 62.07 with Math at 62.76. Braintree High ranks in the 80th percentile with a 95.9% graduation rate and 10th-grade scores above district and state in every subject, though its 2025–26 Science fell from 67.85 to 57.01.
Results are uneven at the lower end. Archie T Morrison is the weakest school by rank (440 of 899, 51st percentile, 3 stars), declining from the 71st to the 51st percentile over three years, with ELA of 39.73 — slightly below the state. Donald Ross is the smallest school at 182 students with the lowest student-teacher ratio (9.0), and its grade-level scores swing widely. Spending and ratios alone do not predict outcomes: Archie spends $18,839 per student yet scores low, while Flaherty spends the most ($20,266) and performs strongly. Eight of nine schools saw ELA decline in 2025–26, with Hollis the exception.
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