Summary:
ZIP code 01824 covers Chelmsford, Massachusetts, and includes five public schools serving grades K–8: three elementary schools (grades K–4) and two middle schools (grades 5–6 and 7–8), with no high school in the ZIP. All five belong to the Chelmsford district, which ranks 73rd of 351 districts statewide — the 79th percentile — with a 4-star rating shared by every school.
South Row is the strongest elementary standout: it holds the highest current rank of the five schools (131 of 899, 85th percentile), the best all-grade math proficiency at 67.05%, and the best 3rd grade math score at 75.31%. McCarthy Middle School, serving grades 7–8, ranks 88 of 478 (82nd percentile) and leads in science (62.76%) and civics (52.49%). Col Moses Parker School has no 2025–26 rank; its latest available is 106 of 501 (79th percentile), though its grade 6 results are strong at 61.78% ELA and 65.18% math. Byam School posts the top elementary ELA result at 59.11%, while Center Elementary School has the lowest current percentile, 72nd, with math at 56.82%.
Two consistent patterns stand out. From 2024–25 to 2025–26, all five schools improved in math and all five declined in ELA; science rose sharply at McCarthy and fell sharply at Col Moses. Grade-level gaps are also large: McCarthy's 8th grade far outperforms its 7th grade, and Col Moses' 6th grade far outperforms its 5th. Spending and class size do not track outcomes simply — Byam spends the most per student ($16,986), while South Row has the highest student:teacher ratio (13.3) yet the strongest math results. Free/reduced-lunch data is blank for every school. Every school here is above the state average in both ELA and math.
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