Summary:
ZIP code 03087, which includes the Windham area, has one high school serving grades 9–12: Windham High School, with 945 students. The school is one of New Hampshire’s strongest, ranking fourth out of 89 high schools in 2025–2026 and placing in the 96th statewide percentile. It has maintained a top-five ranking for three consecutive years, indicating consistently strong performance rather than a one-year result. The school is part of the highly rated Windham School District, which ranks 14th out of 166 districts statewide.
For families focused on graduation and overall academic success, Windham High School reports excellent outcomes. The 2024–2025 graduation rate was 96.5%, compared with 87.0% statewide, while the dropout rate was just 0.3%, versus 2.3% statewide. Academic results are especially strong in science and reading. In 2025–2026, science proficiency was 73%, compared with 38% statewide, and reading proficiency was 77%, compared with 55% statewide. Eleventh-grade SAT results were also well above state averages, with 54% proficient in mathematics and 77% in reading. The school’s 12.7-to-1 student-teacher ratio may support a relatively personal learning environment, although ratios do not show actual class sizes or course availability.
Mathematics is the main area parents may want to monitor. NH SAS mathematics proficiency was 54%, which is 10 percentage points above the state but 12 points below the district’s 66%; it also declined slightly from 56% the prior year. Reading fell from 81% to 77%, though it remains substantially above the state, while science improved from 71% to 73%. Overall, the school offers a strong combination of high rankings, excellent graduation outcomes, low dropout levels, and above-average academic achievement. The available figures come from different school years, so they should be viewed as useful indicators rather than results for one identical student group.
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