Summary:
Conservatory Lab Charter (District) in Dorchester, Massachusetts contains a single school serving grades PK–8 — Conservatory Lab Charter School — with 454 students and a student-teacher ratio of 16.5 in 2024–2025. Because the district has only one school, there are no peer schools to compare against, so families should read the figures below as that school's own profile. Per-student spending reported for 2020–2021 was $18,007, and free/reduced-lunch data is not available in this record.
English Language Arts is the school's clear strength. Grade 7 ELA reached 50.00% proficient against a state average of 39.91% — the highest reported score in the data, and 10.09 points above the state. Grade 6 ELA was 41.30% versus the state's 40.26%, slightly ahead, and Grade 8 ELA was 40.91% versus 41.70%, essentially at the state level. All-grade ELA came in at 36.58%, only 3.45 points below the state's 40.03%, making it the school's closest-to-state subject.
Math, science, and civics lag considerably further behind. All-grade math was 27.13%, 13.98 points below the state, with the widest gaps in Grade 3 (16.98% vs. 42.19%) and Grade 5 (18.00% vs. 39.50%). Science was 23.29%, 17.69 points below state. Grade 8 civics was just 8.70% against a state average of 39.77% — a 31.07-point gap and the lowest result reported. Every all-grade subject declined from 2024–2025 to 2025–2026, and no math, science, or civics grade exceeded the state average. The school ranked 625 of 899, the 30th percentile, in 2025–2026, after a somewhat stronger 2024–2025 at the 36th percentile.
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