Summary:
Zip code 07649 has two schools: Oradell Public School, serving pre-K–6, and River Dell Regional High School, serving grades 9–12. Both earn five stars from SchoolDigger, and both report test results above the state in their matching grade and exam comparisons. Their grade spans differ, so the fairest takeaway is that both schools show strong results—not that one is a better school overall.
Oradell stands out for consistently high elementary results: its 2025–2026 averages across grades 3–6 were 83% in ELA and 80% in math, compared with state averages of 49% and 46%, advantages of 34 and 35 percentage points. Its fifth-grade science result was 54%, versus 27% statewide. River Dell’s strongest listed result was ninth-grade Geometry, at 93% compared with 50% statewide, a 43-point advantage; its 11th-grade science result was 53%, versus 29% statewide. Its smallest listed advantage was 22 points in Algebra I end-of-course results. These figures show different subject strengths, rather than a like-for-like top-and-bottom ranking between the schools.
Recent results are mixed rather than uniformly rising. At Oradell, average ELA rose from 82% in 2024–2025 to 83% in 2025–2026, while math increased from 76% to 80%; some individual ELA grades declined, and sixth-grade math was nearly unchanged. At River Dell, ninth-grade ELA fell from 82% to 78%, and its advantage over the state narrowed from 32 to 27 points; Geometry remained high at 93% but dropped from 99%. SchoolDigger ranked River Dell 26th of 434 high schools and Oradell 49th of 1,331 schools in 2025–2026; Oradell improved from 84th the year before, while River Dell moved from 21st. In 2024–2025, student-teacher ratios were 11.8 at River Dell and 13.0 at Oradell, and chronic absenteeism was below the state rate at both: 4% and 5%, respectively, versus 14% statewide.
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