Summary:
ZIP code 01527 covers Millbury, Massachusetts, where three public schools serve roughly 1,631 students from pre-kindergarten through grade 12: Millbury Junior/Senior High (grades 7–12, enrollment 722), Elmwood Street (PK–2, enrollment 455), and Raymond E. Shaw Elementary (grades 3–6, enrollment 454). There is no standalone middle school; grades 7 and 8 sit inside the junior/senior high. The Millbury district is rated 1 star and ranked 254 of 351 statewide, at the 28th percentile.
Raymond E. Shaw is the clear academic standout among the tested schools. In 2025–2026 it beat the district in ELA, math, and science, and its math proficiency of 42.24% was above the state's 41.11%. In 2024–2025 its math (43.67%) and science (46.61%) both exceeded state averages. Strengths include 4th-grade math (45.76% vs 43.20% statewide) and 5th-grade math (44.21% vs 39.50%), though results are uneven — 5th-grade ELA was 28.87% against 38.15% statewide. Its rank history slipped from 3 stars and the 53rd percentile in 2023–2024 to 2 stars and the 46th percentile in 2025–2026, still well above the district. Millbury Junior/Senior High has strong completion numbers — a 94.4% graduation rate, a 3.2% dropout rate, and the lowest student-teacher ratio at 11.3 — but its all-grade proficiency trails the district and state in all three subjects, and Biology End of Course was only 18.28% versus 37.68% statewide.
Elmwood Street serves PK–2, so it has no test-score or rank data and should not be judged academically from this snapshot. It has the highest student-teacher ratio (14.7) and the lowest per-student spending ($17,459 in 2020–2021), while Raymond E. Shaw has the highest ($18,986). Keep in mind that free/reduced-lunch percentages are blank for all three schools, and spending figures are from 2020–2021 while test results cover 2024–2026, so resource comparisons should not be read as cause and effect.
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