Summary:
ZIP code 91356 has four schools in Los Angeles Unified: three elementary schools serving kindergarten through grade 5 and one middle school serving grades 6–8. In 2025–26, the schools’ average proficiency was above the state by 5 percentage points in ELA, 11 in math and 9 in science, although results varied considerably among schools. The most urgent concern is Tarzana Elementary, where ELA and math scores fell sharply and ended far below the state.
Gaspar De Portola Charter Middle led all four schools in every subject, with 68% proficient in ELA, 60% in math and 52% in science—19, 22 and 16 points above state results, respectively. Among the elementary schools, Wilbur Charter for Enriched Academics led in all three subjects, at 63% in ELA, 59% in math and 46% in science. Tarzana was lowest in ELA and math, at 31% and 25%—18 and 13 points below the state—but its 39% science score was 3 points above it. Nestle Avenue Charter generally fell between Wilbur and Tarzana. All-grades comparisons combine different grade spans, so elementary grade-level results offer a fairer comparison among those three schools.
Recent trends reinforce the contrast: Tarzana dropped 18 points in ELA and 15 in math from 2024–25 to 2025–26, while Nestle improved in all three subjects, including a 10-point rise in science. Wilbur’s ELA edged up, but its math and science declined; De Portola’s ELA dipped while its math and science rose. SchoolDigger ranked De Portola at the 89th percentile in each of the three years shown, while Nestle rose from the 64th to the 72nd percentile and Tarzana fell from the 55th to the 33rd. Enrollment and income measures add context, but do not form a simple match with scores: Tarzana had the smallest enrollment, 246, and the lowest student–teacher ratio, 17.5; in 2024–25, Nestle reported 72% free/reduced lunch eligible, Wilbur 39% and De Portola 49%, while Tarzana reported 53% directly certified for free meals, a different measure.
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