Summary:
ZIP code 03809 has one high school, Prospect Mountain High School, serving grades 9–12 in Alton, New Hampshire. The school enrolls about 402 students and is part of the Prospect Mountain JMA School District. With a student-teacher ratio of 11.1:1, the school is relatively small and may offer students access to individualized support. Because it is the only high school in the ZIP code, there are no nearby schools in this data set for direct comparison.
The school’s strongest overall outcome is graduation: 89.5% of students graduate, compared with 87% statewide. Its dropout rate is 2.3%, equal to the New Hampshire rate. Reading is also a relative strength. In 2025–2026, 56% of students were proficient in NH SAS reading, about the same as the state’s 55%. However, families should pay close attention to mathematics and science. Only 13% of students were proficient in NH SAS mathematics, compared with 44% statewide, and SAT mathematics proficiency was 13%, compared with 30% statewide. Science proficiency was 30%, below the state’s 38%.
Recent results show a broad decline from the prior year: math proficiency fell from 20% to 13%, reading from 67% to 56%, and science from 49% to 30%. The science drop is especially notable because the school had exceeded the state by 11 percentage points the previous year. The school’s ranking also fell from 33rd of 86 schools in 2024–2025 to 69th of 89 schools in 2025–2026. Overall, the school appears to support students through graduation reasonably well, but its latest results point to significant academic concerns, especially in math and science. Families may want to ask about tutoring, course support, intervention programs, and plans to address these recent declines.
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