Summary
Thompson is a K–5 elementary school serving 537 students in Arlington, MA, part of the Arlington district — which ranks 17th of 351 Massachusetts districts — and the school itself ranks 72nd of 899 statewide for 2025–2026 (92nd percentile, 5 stars), the highest listed percentile in its history.
Achievement at Thompson is far above state averages but slightly below its own district's: 68.22% proficiency in English language arts (versus 71.07% district, 40.03% state), 65.88% in math (versus 70.06% district, 41.11% state), and 73.26% in science (versus 77.78% district, 40.98% state). Against its immediate Arlington peers — John A Bishop, Brackett, Hardy, and M Norcross Stratton — Thompson has the largest enrollment but ranks fourth of five, and posts the lowest all-grade math and science proficiency of the group. Its strengths are concentrated in grade 4, where ELA is the highest among these peers and math is second. Relative weak spots are grade 3 math (63.41%) and grade 5 math (62.79%) and science (73.26%), each below every Arlington peer. Notably, 2025–2026 was a rebound year after a dip to the 80th percentile, with math rising from 56.81% to 65.88%.
Thompson's relative effectiveness for many student groups is strong — special education students (92nd percentile), Hispanic students (90th), White students (94th), female students (92nd), male students (91st), and low-income students (77th, improved from 68th). The clearest persistent gap in the available data is for Asian students, where the school's relative rank is 122 of 149 (18th percentile), a pattern also seen in 2023–2024 and 2021–2022 — worth asking the school about. On resources, Thompson spent $16,024 per student in 2020–2021, less than Hardy, Bishop, and Stratton, with the highest student-teacher ratio among these peers (13.6), yet still produces top-decile outcomes. Some caveats: free/reduced-lunch figures are suppressed across all listed years, and spending data are from 2018–2021.
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