Summary
John K Tarbox is an elementary school in Lawrence, MA serving 281 students in grades 1–4, part of the Lawrence district, which ranks 337th of 351 districts statewide. The school's 2025–2026 rank is 720th of 899 (20th percentile, 1 star) — low by statewide standards, but it is the strongest of the nearby Lawrence district elementary schools with test scores. Its all-grade MCAS proficiency was 19.28% in ELA (district: 17.46%; state: 40.03%) and 31.71% in math (district: 17.28%; state: 41.11%). Compare that with Henry K. Oliver Elementary (10.11% ELA, 11.30% math), Francis M Leahy Elementary (10.53%, 6.98%), Gerard A. Guilmette (9.52%, 8.70%), and Arlington Elementary (9.55%, 5.61%) — Tarbox's ELA is roughly double its peers' and its math is often several times higher.
Math is the school's clearest strength. Tarbox is about 14 points above the district in math and only about 9 points below the state, while its ELA sits about 21 points below the state. Third-grade math (35.42%) is the strongest single result and comes within about 7 points of the state average; fourth-grade math (26.47%) lags further behind. ELA is the main challenge, especially in fourth grade, where proficiency was 14.29% against a state figure of 37.43%. Per-student spending was $17,210 (2020–2021), higher than most nearby same-district elementaries, and the student–teacher ratio was 11.4 in 2024–2025 — mid-range locally.
Subgroup results are more encouraging than the overall rank suggests. English Language Learner students ranked in the 92nd percentile with 5 stars in 2025–2026, up from the 59th–69th range in prior years, and low-income students were near the statewide median for that group. Special education is a persistent weakness, ranking in the bottom 10–15% recently. Among nearby options, Community Day Charter Public School ranks higher overall (52nd percentile, 3 stars) with stronger results in all subjects, a lower student–teacher ratio (8.8), and higher spending ($18,892), while Lawrence Family Development Charter School, Donald P Timony Grammar, and Tenney Grammar School post higher ELA but lower math than Tarbox. Note that spending figures are several years old, free/reduced-lunch data and 2025–2026 science results were not available, and some nearby schools serve different grade spans, so comparisons are imperfect.
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