Best Public Schools in Zip Code 91775

ZIP code 91775 has four elementary schools: Emperor Elementary serves K–6, while Washington Elementary, Wilson Elementary and Coolidge Elementary serve K–5. Because Emperor includes sixth grade, its all-grades results are not a perfectly like-for-like comparison with the other schools. The most important takeaway is that the ZIP code does not have one shared academic profile: results vary widely by school, so families should compare individual schools rather than assume area-wide averages describe each one.

Wilson Elementary stands out at the top, leading the 2025–2026 all-grades results in ELA (68%), math (69%) and science (69%). Its math score is 30 percentage points above the state, and its science score is 34 points higher. Emperor Elementary is also strong, with 66% in ELA, 66% in math and 59% in science; its sixth-grade results are especially notable, at 81% in ELA and 66% in math. At the lower end, Coolidge Elementary has the lowest ELA (45%) and math (39%) scores, though its math result is just above the state. It ties Washington Elementary for the lowest science score (41%). The gap between Wilson and Coolidge is 24 points in ELA and 29 in math; the four-school average is above the state in all three subjects, with the largest advantage in math.

Recent changes are mixed: the four-school science average rose 5 percentage points from 2024–2025 to 2025–2026, while ELA fell 2 points and math fell 3. Wilson improved in ELA and science and was nearly unchanged in math; Coolidge’s science rose 11 points even as its math fell 7. SchoolDigger’s 2025–2026 statewide rankings put Wilson at the 88th percentile, Emperor at the 86th, Washington at the 75th and Coolidge at the 56th; Wilson’s ranking rose over three years, while Coolidge’s fell. Other measures do not neatly match the score patterns: 2024–2025 student–teacher ratios ranged from 21.0 at Coolidge to 28.8 at Emperor, and all four reported free/reduced lunch eligible (FRL) for school year 2024–2025, ranging from 40% at Emperor to 68% at Washington. These figures describe differences between schools, not what caused them.