Summary:
ZIP code 01863 covers North Chelmsford, Massachusetts, and contains just one public elementary school: Charles D Harrington, serving grades K–4 with 468 students. It belongs to the Chelmsford district, a strong system rated 4 stars at the 79th percentile statewide, while the school itself holds 3 stars at the 63rd percentile. With only one school in this ZIP, parents have no local school-to-school comparison; the useful benchmarks are the district and the state.
On 2025–2026 MCAS Next Generation tests, Charles D Harrington beat the Massachusetts average in every reported row — six subject-and-grade measures — by roughly 6 to 9 percentage points each time. Math was the standout: 50.00% proficient across all grades versus 41.11% statewide and 55.00% in the district, with Grade 4 math the school's highest figure at 52.08%. ELA came in at 47.37% against a state average of 40.03% and a district figure of 53.49%. Even the school's lowest result, Grade 4 ELA at 44.68%, topped the state's 37.43%. Performance is consistent across grades and subjects — yet the school trails its own district by roughly 5 to 7 points in every row.
Trends are encouraging. ELA rose from 46.15% to 47.37% while both the district and the state declined, narrowing the school's gap to the district from 10.93 points to 6.12. Math rose from 46.94% to 50.00%, widening its cushion over the state to 8.89 points. The school climbed from 388th to 329th in state rank and from the 58th to the 63rd percentile, though it stayed at 3 stars. The student–teacher ratio is 12.2, and per-student spending is $15,354, reported for 2020–2021 only. Free/reduced lunch data is not reported — that figure is unavailable, not zero, so economic context cannot be assessed.
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