Summary:
ZIP code 94549 has six public schools—four elementary, one middle and one high school—with 4,483 students across the Lafayette Elementary and Acalanes Union High districts. In 2025–26, the schools’ average proficiency results were 33 percentage points above the state in English language arts (ELA), 41 points above in math and 27 points above in science. Every school exceeded the state result in all three subjects, making strong performance relative to the state the clearest overall finding.
Top results vary by subject. Happy Valley Elementary leads in science at 72% and ELA at 85%; its science score is 9 points above the next-highest school. Springhill Elementary leads math at 84%, about 1 point ahead of Happy Valley; ELA is nearly tied at the top, with Happy Valley at 85.3% and Acalanes High at 85.2%. M. H. Stanley Middle has the lowest all-grades ELA result, 78%—8 points below the leader, though still 28 points above the state. Acalanes has the lowest all-grades math result, 70%, but is 32 points above the state.
Recent changes were mixed: the six-school average was nearly flat in ELA and math from 2024–25 to 2025–26, while science fell 3 points even as the state rose 3; the science gap over the state narrowed by 6 points. M. H. Stanley science rose 8 points, while Burton Valley Elementary fell 11 and Happy Valley fell 10. SchoolDigger ranks all six in the 95th–98th statewide percentiles for 2025–26; rankings generally eased from 2023–24, with Springhill the exception. Elementary student–teacher ratios range from 21.7 to 24.5. The reported measure is free/reduced lunch eligible, sy 2024–2025: shares range from 2% at Burton Valley to 10% at Lafayette Elementary, offering context but not explaining results. All-grades figures combine different grade spans, so grade-specific results may help with school-to-school comparisons.
Thank you for your feedback!