Summary:
Zip code 91790 has two middle schools in West Covina Unified: Edgewood Middle, serving grades 6–8, and Walnut Grove Intermediate, serving grades 7–8. Their 2025–26 results are below state averages in English language arts (ELA), mathematics, and science; because the schools serve different grade spans, their overall comparisons are not fully like-for-like. The most important finding is that neither school meets the state average in any of the three subjects.
Walnut Grove stands out in mathematics, with 32% proficient compared with 25% at Edgewood, a 6-point lead; both are below the state’s 38%. Walnut Grove also edges ahead in ELA, with 39% compared with Edgewood’s 39%—a difference of less than 1 point—while both trail the state’s 49%. Edgewood leads in science, at 27% versus Walnut Grove’s 21%, though both are below the state’s 36%. The pattern also varies by grade: Walnut Grove leads grade 8 mathematics by 10 points, while Edgewood leads grade 8 science by 6 points. Neither school leads across all subjects.
Scores rose in all three subjects at both schools from 2024–25 to 2025–26, with the clearest gains at Edgewood: up 5 points in ELA, 2 in mathematics, and 7 in science. Walnut Grove gained 3 points in mathematics and science, while its ELA result was nearly unchanged. SchoolDigger lists both at 2 stars for 2025–26; its percentile ranking rose from 37 to 39 for Edgewood over three years and fell from 54 to 41 for Walnut Grove. Other context differs: in 2024–25, free/reduced lunch eligible students represented 82% at Edgewood and 90% at Walnut Grove; student-teacher ratios were 20.8 and 16.3, respectively. Chronic absenteeism was lower than the state’s 18% at both schools: 10% at Edgewood and 9% at Walnut Grove.
Thank you for your feedback!