Summary:
The Londonderry School District has one high school, Londonderry Senior High School, serving grades 9–12 in Londonderry, New Hampshire. The school enrolls 1,289 students and has a reported student-teacher ratio of 11.9 to 1, giving families a single local high school option rather than multiple schools to compare within the district.
Londonderry Senior High School has shown strong improvement in its statewide standing. It rose from 34th of 87 New Hampshire high schools in 2023–2024 to 18th of 89 in 2025–2026, moving from the 61st to the 80th percentile and earning a four-star rating in the two most recent years. The school’s reported graduation rate is 87.8%, slightly above the 87.0% state average, while its reported dropout rate is 0.0%, compared with 2.3% statewide. These results suggest generally positive student persistence and completion outcomes.
Academically, the school is strongest in reading and science. In 2025–2026, 70% of students were proficient in reading and 54% in science, exceeding state results by 15 and 16 percentage points, respectively. Mathematics is the main area needing attention: 39% were proficient, five points below the state and 16 points below the district, although math improved from 35% the prior year. Reading declined from 75% to 70%, and science slipped from 56% to 54%, but both remain well above state averages. Overall, the school offers strong statewide performance and favorable completion indicators, with mathematics the clearest priority for improvement.
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