Summary:
The two schools in Winchester CUSD 1 serve PK–8 and grades 9–12 and enroll 567 students across Winchester. The clearest contrast is that the high school’s graduation rate is strong even though its reported test results trail state figures: graduation was 97% in 2025–26, versus 90% statewide, an 8-point advantage.
Winchester Elementary School stands out in ELA: its 2025–26 all-grades result was 65%, compared with 56% statewide, an 8-point lead. Third-grade ELA was 71% versus 48% statewide, while seventh grade was 76% versus 58%. Math was a weaker area: the all-grades result was 38%, 2 points below the state, and eighth-grade math was 23% versus 35%. At Winchester High School, every reported 2025–26 test result was below its state comparison; for example, ninth-grade math was 29% versus 42%, and 11th-grade science was 33% versus 48%. These results are not direct head-to-head comparisons because the schools serve different grades and use different assessments.
Elementary results improved relative to the state in all-grades ELA and math from 2024–25 to 2025–26: ELA rose from 59% to 65%, widening its state advantage by 2 points, while math rose from 36% to 38% and its deficit narrowed by 1 point. Science varied by grade: fifth-grade results fell from above to below the state, while eighth-grade results rose to 68%, 16 points above the state. SchoolDigger’s elementary percentile ranking declined from 63 to 52 over the period; the high school’s moved from 30 to 33, after reaching 52 in 2024–25. In 2024–25, the elementary school had a 13.9 student-teacher ratio and 48% free/reduced lunch eligible, compared with 9.2 and 39% at the high school. Those figures describe context, not the cause of the schools’ results.
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