Summary:
Elementary schools in Riverdale School District 51J consist of a single school: Riverdale Grade School, a K–8 public school in Portland, Oregon serving 406 students. Because it is the district's only elementary school, there is no other school in the area to compare it against — but its results stand out against the state instead. The district itself is ranked #1 of 141 Oregon districts, at the 99th percentile with 5 stars, and the school has ranked in the top 7 of roughly 700 Oregon schools for three straight years: #5 of 709 in 2025–2026, #7 of 706 in 2024–2025, and #5 of 710 in 2023–2024, all at the 99th percentile with 5 stars.
Test performance is far above state averages. In 2025–2026 all-grade OSAS proficiency was 85.7% in English Language Arts (state: 43.8%), 79.6% in mathematics (state: 32.9%), and 71.4% in science (state: 30.6%). Every reported grade-level score is above the state average, with the strongest relative results in 7th-grade ELA at 93.8% (48.5 points above state), 8th-grade ELA at 90.7% (49.2 points above), 8th-grade math at 87.0% (57.0 points above), and 5th-grade math at 83.7% (51.3 points above). The lowest reported school value is 6th-grade math at 64.7%, which is still 35.0 points above the state's 29.7%.
Attendance is a clear strength: chronic absenteeism in 2024–2025 was 12.6%, well below the district's 16.2% and the state's 33.5%. Per-student spending was $19,491 and the student-teacher ratio was 16.5, though no state or district benchmarks are provided for those figures, so they are context rather than clear strengths or weaknesses. The free/reduced-lunch percentage is not reported in this data, so the school's socioeconomic composition is unknown.
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