Summary
Riverdale is a grade 1–5 elementary school at 143 Needham Street in Dedham, MA, serving about 206 students in the Dedham district — a small building in a suburban area where the closest schools run from Boston neighborhoods about a mile east to the Needham, Newton, and Brookline districts roughly two miles west. Because it starts at grade 1, the district's youngest learners attend the Early Childhood Center nearby.
Riverdale ranks in the 58th percentile of Massachusetts elementary schools (3 stars) in 2025-2026, up from the 47th percentile the year before, and it clears the state average in English language arts (47.46%), math (44.07%), and science (45.00%). Within Dedham it is the stronger 1–5 option by a wide margin: against Avery, its same-grade district peer 1.9 miles away, Riverdale is 15–19 points higher in every subject and 30 percentile points higher in rank. The catch is variation between grades. Grade 3 scores sit far above both district and state (66.67% in ELA, 63.89% in math), grade 5 is roughly at the state line, and grade 4 falls below the district in both subjects, with math 11.5 points under the state. With roughly 40 students per grade, these swings represent a handful of children, so they are worth watching rather than treating as settled.
Riverdale's low-income students rank at the 84th percentile (4 stars) and its special education students at the 63rd — both above the school's overall standing, which suggests it serves its higher-need students particularly well. The school also has the smallest classes in its comparison set (a 9.5 student–teacher ratio) and spends $24,768 per student. Even so, nearby Broadmeadow in Needham, Memorial Spaulding in Newton, and Edith C Baker in Brookline outperform it by more than 20 proficiency points, and several Boston schools — including Lyndon, Bates, and Mozart — rival or exceed it as well.
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