Summary:
ZIP code 94087 has three middle schools, all serving grades six through eight, with 2025–2026 proficiency results above California’s in every reported subject. Their results are not alike: Cupertino Middle is well ahead of the other two, which score much closer to each other. The most important finding is that Cupertino leads all three schools in every reported grade-level result for ELA and math, as well as in all three all-grades subjects.
Cupertino Middle scores 74% in ELA, 75% in math and 73% in science—about 10, 14 and 10 percentage points ahead of the next-highest school in each subject. The other two are nearly tied in all-grades ELA and math: Marian A. Peterson Middle is slightly ahead in ELA, while Sunnyvale Middle is slightly ahead in math; Peterson leads science by about 2 points. Peterson is not consistently the lowest performer: it has stronger sixth-grade math than Sunnyvale, but the lowest all-grades math and seventh-grade ELA and math scores in the group.
Scores mostly fell from 2024–2025 to 2025–2026, even as California’s results rose, narrowing the schools’ average advantage over the state by about 4 points in ELA, 2 in math and 3 in science. Peterson is a notable exception in science, improving by about 8 points. SchoolDigger ranks Cupertino 139th of 2,703 schools, in the 95th percentile with five stars; it gives Sunnyvale and Peterson four stars, ranking them 328th and 324th. Student-teacher ratios range from 18.0 at Cupertino to 21.3 at Peterson. For context, 2024–2025 free/reduced lunch eligible shares were 21% at Cupertino, 17% at Sunnyvale and 22% at Peterson; these figures are not a measure of what caused test results.
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