Summary:
Zip code 95690 has one school, Walnut Grove Elementary, serving kindergarten through sixth grade with 131 students. In 2025–2026, its all-grades proficiency was 42% in English language arts, 23% in math, and 7% in science; the comparable California rates were 49%, 38%, and 36%. The school was also slightly above River Delta Joint Unified in ELA and math, but its science rate was 18 percentage points below the district’s 25%. The most important academic concern is science, where Walnut Grove was 29 points below California.
There is no school-to-school leader or trailer in the ZIP code because Walnut Grove is the only school listed; the clearest contrast is between grades within the school. Fourth grade stood out at 77% in ELA and 54% in math, exceeding state results by 31 and 11 percentage points, respectively. Fifth grade was the weakest reported grade: ELA proficiency was 20%, 29 points below the state, and math was 7%, 30 points below. Sixth-grade results were also below state rates, by 16 points in ELA and 27 points in math. These grade differences show why the all-grades averages do not tell the whole story.
Results over time are mixed: from 2024–2025 to 2025–2026, ELA rose from 32% to 42% and its gap with the state narrowed by 9 percentage points, while math fell from 25% to 23% and science from 11% to 7%; their state gaps widened by 3 and 8 points. SchoolDigger’s statewide percentile ranking improved from 13th to 28th to 33rd over three years, a 20-point rise, despite the latest declines in math and science. Chronic absenteeism was 10%, compared with 20% districtwide and 18% statewide. As context, the school’s reported low-income measure was 93% free/reduced lunch eligible in 2024–2025, and its student-teacher ratio was 16.3 in that school year.
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