Schools in Zip Code 91766

ZIP code 91766 has 14 schools—10 elementary schools, one middle school and three high schools—with 2025–2026 results for English language arts (ELA), math and science. The equal-school averages were 37% in ELA, 24% in math and 23% in science, compared with state figures of 49%, 38% and 36%, respectively. Results vary widely: ELA proficiency ranged from 17% to 68%, math from 11% to 47%, and science from 14% to 40%. The most important takeaway is that area averages are below state results in every subject, but school-level differences are large.

Ranch Hills Elementary is the strongest broad-based elementary performer, with 57% ELA, 47% math and 36% science proficiency; it leads elementary schools in all three subjects. Diamond Ranch High leads all schools in ELA at 68%, while Garey High leads high schools in math at 36% and science at 40%. At the other end, Washington Elementary is lowest in all three subjects, at 17% ELA, 11% math and 14% science. Lexington Elementary has a notable grade-level contrast: grade 8 ELA and math are 69% and 78%, well above state results of 49% and 36%, while its grade 3–5 ELA results range from 15% to 30%.

Average scores rose only modestly from 2024–2025: ELA was essentially flat, math increased by 1 percentage point and science by 2 points. Individual changes were more dramatic: Garey gained 8 points in ELA, 10 in math and 17 in science, while Westmont Elementary science fell 32 points. SchoolDigger’s statewide percentile ranking for Garey rose from the 43rd to the 70th percentile between 2023–2024 and 2025–2026; Washington’s fell from the 17th to the 3rd. As context, in 2024–2025, free/reduced lunch eligible students made up about 95% at both Vejar Elementary and Washington, yet Vejar had higher grade 3–5 ELA results in each grade; these figures describe the schools, not a cause of their results.