Summary:
Zip code 92507 has eight Riverside Unified schools: four elementary schools, one middle school and three high schools, spanning elementary through high school; Riverside STEM Academy serves grades 5–12. The schools’ 2025–26 proficiency results vary widely, and most are below state results. The most important finding is that STEM is a clear achievement outlier, while the other seven schools average below the state in ELA, math and science.
Riverside STEM Academy leads the list in all three subjects, with 84% proficient in ELA, 77% in math and 81% in science—about 35, 39 and 45 percentage points above state results. At the other end, Abraham Lincoln Continuation has 3% proficiency in ELA, 3% in math and 0% in science, about 46, 35 and 36 points below the state. Among the remaining schools, John W. North High leads in ELA at 46%, Longfellow Elementary in math at 27%, and University Heights Middle in science at 24%; each is still below its state benchmark. SchoolDigger ranks STEM 8th of 2,137 California schools and places Lincoln in the 2nd percentile.
Across the eight schools, average proficiency fell by 2 percentage points in ELA from 2024–25 to 2025–26, while it rose by 1 point in math and 2 points in science; state results rose in all three subjects, including 3 points in science. School-level changes differed: Longfellow improved by 4 points in ELA and 8 in math, while North fell by 7 in ELA; University Heights gained 9 points in science. Income measures are context, not explanations: all eight report free/reduced lunch eligible for school year 2024–25, ranging from 54% at STEM to 95% at Lincoln. Student-teacher ratios also vary, from 12.2 at Lincoln to 26.0 at Highgrove. STEM’s grades 5–12 span differs from the narrower grade spans at the other schools, so all-grades comparisons do not always compare the same grades.
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