Summary:
Southern Berkshire is a small western Massachusetts district serving about 596 students across three schools — two elementary schools and one high school — with grades spanning PK–12 and no standalone middle school. Mt Everett Regional (grades 6–12, 278 students) and Undermountain (PK–5, 260 students) are similar in size, while New Marlborough Central (PK–3) is far smaller at 58 students. The district ranks 179 of 351 statewide in 2025–2026, at the 49th percentile with 2 stars, even though Mt Everett and Undermountain each earned 3 stars individually that year.
Academic results vary sharply by school and subject. New Marlborough Central posted the strongest 2024–2025 English language arts and math results — 56.25% ELA and 43.75% math, above both district and state — but it is very small, only 3rd grade is tested in the available data, and it has no 2025–2026 results, so those numbers can swing with a few students. Undermountain showed the biggest one-year gain: its rank percentile climbed from 38 to 51, ELA rose 10.66 points to 41.54%, and science rose 8.41 points to 48.89%, well above state, though math at 40.31% remains a weakness. Mt Everett Regional is a school of high peaks and low valleys — Biology at 56.25% and 7th-grade math at 50% far exceed state, and graduation is 92.3%, but 10th-grade ELA at 30% and 10th-grade math at 32.14% fall well below state.
Across the district, 2025–2026 proficiency is slightly above state in ELA, math, and science, but that average hides differences: Mt Everett sits below state in ELA and science, while Undermountain is below in math. All three schools spend between $22,675 and $27,481 per student, with student/teacher ratios under 10:1, yet results do not track uniformly with spending. Free and reduced-lunch figures are not available, so the economic context behind these results cannot be assessed.
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