Summary:
ZIP code 91711 has 11 schools—eight elementary schools, one intermediate school, and two high schools—with 6,120 students listed across them; all are in Claremont Unified. The clearest takeaway is that results vary substantially from school to school: among the elementary schools with scores, the gap between the highest and lowest results ranges from 25 to 56 percentage points across subjects.
Sycamore Elementary leads the elementary group in all three subjects, with 77% in English, 70% in math, and 83% in science; Vista del Valle Elementary has the lowest results, at 51%, 32%, and 27%. Their gaps are 25 points in English, 38 in math, and 56 in science. The high schools also differ sharply: among 11th graders, Claremont High outscored San Antonio High by 57 points in English, 47 in math, and 44 in science. Claremont’s graduation rate was 98%, compared with 72% at San Antonio; San Antonio is a continuation high school, so the schools are not directly alike. El Roble Intermediate also stands out, exceeding state results in every reported grade-specific subject.
Recent progress is mixed: across the 10 schools with scores, average English results rose about 1 point from 2024–2025 to 2025–2026, math was essentially flat, and science rose 4 points. Sycamore had the largest science gain, 20 points, even as its English and math results fell by 4 and 5 points. SchoolDigger ranked Claremont High at the 90th percentile and San Antonio High at the 18th in 2025–2026; Sumner and Mountain View each rose from the upper 50s to the upper 60s over three years. As context, the 2024–2025 free/reduced lunch eligible share was 22% at Sycamore and 53% at Vista del Valle, while their student-teacher ratios were 26.9 and 20.7, respectively; these figures describe school context, not what causes test results.
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