Summary:
Impact | Black River Elementary is the only elementary school listed in this Renton, Washington, area, serving 209 students in kindergarten through fourth grade. The school has a 15.8-to-1 student-teacher ratio, and 62.68% of students participate in the free or reduced-price lunch program. For families considering Impact | Black River Elementary, the most important picture is mixed: academic results are below Washington averages, but math improved noticeably in the latest year.
In 2025–2026, 28.36% of students were proficient in English Language Arts and 32.84% were proficient in math. These results were 24.45 and 10.27 percentage points below the Washington averages, respectively. Math was the school’s stronger subject and improved by 7.03 points from the previous year, rising from 25.81% to 32.84%. ELA changed very little, declining from 29.03% to 28.36%. The school’s highest grade-subject result was third-grade math, at 37.93%, followed by third-grade ELA at 34.48%. Even these stronger results remained below statewide performance.
Fourth grade is the clearest area of concern. Proficiency fell from third to fourth grade in both subjects, from 34.48% to 23.68% in ELA and from 37.93% to 28.95% in math. Fourth-grade ELA was 26.75 points below the state average, making literacy the school’s largest achievement gap. Reported rankings also place the school near the lower end of its comparison groups, with an 11th-percentile ranking and one star; the ranking totals differ, so they should not be treated as a direct year-to-year comparison. The school reports $25,788 in per-student spending, though comparable spending data would provide more context.
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