Summary:
ZIP code 03820, which includes Dover, New Hampshire, has one high school serving grades 9–12: Dover Senior High School, a 1,371-student school in the Dover School District.
Dover Senior High School has several important strengths for families to consider. Its 91.4% graduation rate is higher than New Hampshire’s 87.0% average, while its 0.3% dropout rate is well below the state’s 2.3%. The school’s recent statewide ranking also improved considerably, rising from 48th of 86 schools in 2024–2025 to 27th of 89 in 2025–2026, placing it around the 70th percentile. Reading is the school’s strongest academic subject: 67% of students were proficient in all-grade reading, compared with 59% in the district and 55% statewide. Eleventh-grade SAT reading proficiency was also strong at 67%, above both the district and state.
The main area for improvement is mathematics. All-grade math proficiency increased from 26% to 34% in one year, but the latest result remained below the district’s 45% and the state’s 44%. Science proficiency was 36%, below the district’s 44% but close to the statewide 38%. Eleventh-grade SAT math performance was more favorable, matching the district at 34% and exceeding the state’s 30%, showing that results can vary by assessment and grade level. The school reports a 12.6-to-1 student-teacher ratio and 23.12% free- or reduced-price lunch participation. Overall, families will find a large high school with strong graduation, low dropout, and literacy outcomes, along with improving but still uneven performance in math and science.
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