River Dell Regional School District

River Dell Regional School District serves 1,598 students in two schools spanning grades 7–12: River Dell Middle School (grades 7–8, enrollment 573) and River Dell Regional High School (grades 9–12, enrollment 1,025). The overall picture is strong: in 2025–2026, every reported, unsuppressed test result at both schools was above the state result for the same grade and test. The clearest direct comparison is Algebra I End of Course: the middle school scored 100% and the high school 62%, while the state result was 40%.

The schools stand out in different assessments rather than as an overall top and bottom: the middle school leads the direct Algebra I comparison by 38 percentage points, while the high school’s strongest listed result is Geometry End of Course at 93%, 42 points above the state’s 52%. The middle school’s lowest listed result is grade 8 mathematics at 42%, still 20 points above the state; the high school’s lowest listed result is grade 11 science at 53%, 25 points above the state. The only direct school-to-school test comparison is Algebra I End of Course; the other results cover different grades or tests.

Across 12 matched school, test, and grade records, the average advantage over the state narrowed from 32 percentage points in 2024–2025 to 30 in 2025–2026: seven gaps narrowed and five widened. The largest change was middle-school grade 8 mathematics, where the school result fell from 58% to 42% and its state advantage narrowed by 17 points. SchoolDigger gives the district five stars and a rank of 25 of 607; the high school has five stars, rank 26 of 434, and the 94th percentile, while the middle school has five stars, rank 39 of 743, and the 95th percentile. Their student–teacher ratios are similar: 11.8 at the high school and 11.7 at the middle school. Both report free/reduced lunch eligible for 2024–2025: 2% at the high school and 1% at the middle school; these are context measures, not explanations for results.