Summary:
ZIP code 94514 has two schools: Excelsior Middle serves grades 6–8 and enrolls 377 students, while Mountain House Elementary serves K–8 and enrolls 14. In 2025–26, their reported all-grades results diverged: Mountain House was above California’s results in ELA and math, while Excelsior was below the state in ELA, math, and science. The most important takeaway is that these schools show sharply different academic profiles, not one shared pattern for the ZIP code.
Mountain House leads on reported all-grades ELA and math: 77% were proficient in ELA and 46% in math, compared with state results of 49% and 38%. That puts Mountain House 28 points above the state in ELA and 8 points above in math. Excelsior’s results were 43% in ELA, 30% in math, and 26% in science—6, 9, and 10 points below the state, respectively. Excelsior’s clearest grade-specific concern is eighth-grade math: 22% proficient, 15 points below the state’s 36%. Eighth-grade ELA was comparatively close to the state, at 48% versus 49%. Mountain House’s science result is suppressed, so a science comparison between the schools is not available.
The schools’ results moved in opposite directions from 2024–25 to 2025–26: Excelsior fell 6 points in ELA, 5 in math, and 7 in science, while Mountain House rose 8 points in both ELA and math. SchoolDigger’s reported percentile for Excelsior also declined, from 62 to 46, a drop of 16 percentile points. As context, in 2024–25, 33% of Excelsior students and 21% of Mountain House students were free/reduced lunch eligible; student-teacher ratios were 19 and 14, respectively. These figures describe different school contexts, not causes of the results; the schools’ different grade spans and Mountain House’s enrollment of 14 also limit direct comparisons.
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