Summary:
Prospect Mountain JMA School District has one high school, Prospect Mountain High School, serving grades 9–12 in Alton, New Hampshire. The school enrolls about 402 students and has a relatively low student-teacher ratio of 11.1 to 1, which may support more individualized attention. With only one high school in the district, its results represent the district’s entire high school profile.
The school’s strongest parent-facing indicators are its graduation and student-retention outcomes. The 2024–2025 graduation rate was 89.5%, above New Hampshire’s 87.0% average, while the dropout rate was 2.3%, matching the state. Reading is the strongest tested subject: 56% of students were proficient in 2025–2026, about equal to the statewide 55%, following a stronger 67% result the previous year. Science was also a strength in 2024–2025, when 49% were proficient compared with 38% statewide, although that result fell to 30% in 2025–2026.
The most significant concern is mathematics. Only 13% of students met proficiency on the 2025–2026 NH SAS mathematics assessment, compared with 44% statewide; the school’s Grade 11 SAT mathematics result was also 13%, versus 30% statewide. Reading and science also declined from the prior year, contributing to a ranking drop from the 62nd percentile in 2024–2025 to the 22nd percentile in 2025–2026. Parents may want to ask about mathematics support, intervention programs, course sequencing, and plans to address the recent science decline. Overall, the school appears to provide a stable path to graduation, but academic achievement—especially in mathematics—needs focused improvement.
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