Summary:
ZIP code 66090 has two Riverside public schools serving grades 6–12: Riverside Middle School (grades 6–8) and Riverside High School (grades 9–12). In 2025–2026, both schools’ overall proficiency results were below state results in English language arts (ELA), math, and science. The clearest concern is the high school, which trailed the state by 14 points in ELA, 16 in math, and 19 in science.
Riverside Middle School stands out as the stronger school on current proficiency: it led the high school by 10 points in ELA, 8 in math, and 16 in science. Its scores were 42% in ELA, 33% in math, and 35% in science; the high school scored 32%, 25%, and 19%, respectively. The middle school was still below the state in each subject, though its grade 7 ELA and grade 6 math results were above state results; grade 8 math was 12 points below. The high school has an important positive exception: its graduation rate was 98%, compared with 90% statewide.
Recent results moved in different directions. The high school’s ELA proficiency fell from 56% to 32% between 2024–2025 and 2025–2026, while its math fell from 32% to 25%. The middle school improved in ELA, from 39% to 42%, and science, from 31% to 35%, but math declined from 37% to 33%. SchoolDigger gives the high school 1 star and a 22nd-percentile ranking, compared with 2 stars and the 41st percentile for the middle school. The middle school’s student-teacher ratio is 12.9, versus 10.3 at the high school; its free/reduced-lunch rate is also higher, 58% versus 48%. Chronic absenteeism is lower at the middle school: 14% compared with 20% at the high school. These schools serve different grade spans, so their overall scores are not grade-for-grade comparisons.
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