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Prospect Mountain High School

Public Grades 9-12
33rd
SchoolDigger Rank ?
of 86 New Hampshire High Schools
Better than 62% of New Hampshire high schools
Summary

Prospect Mountain High School is a public high school located in Alton, New Hampshire, serving grades 9-12 with a total enrollment of 405 students. The school is part of the Prospect Mountain JMA School District, which is ranked 67 out of 158 districts in the state and has a 3-star rating from SchoolDigger.

Prospect Mountain High School has consistently ranked in the top half of New Hampshire high schools, with a ranking between 25-49 out of 71-87 schools over the past 10 years. The school's performance on state assessments (NH SAS) and SAT exams is generally above the state average, particularly in reading and science, with 67% of students proficient or better in reading compared to the state average of 55%. However, the school's performance in mathematics assessments is below the state average, with only 20% of students proficient or better, compared to the state average of 42%. The school's exceptional performance in serving its special education students is a notable strength, ranking 2nd out of 35 New Hampshire high schools in 2024-2025.

When comparing Prospect Mountain High School to nearby schools, Coe-Brown Northwood Academy consistently outperforms Prospect Mountain High School on academic assessments, ranking among the top 10-15 high schools in the state. In contrast, Spaulding High School and Laconia High School generally perform below Prospect Mountain High School on academic measures. Overall, Prospect Mountain High School appears to be a strong-performing school within its region, with particular strengths in serving special education students and maintaining consistent academic achievement, though it could potentially benefit from a focus on improving its mathematics performance.

402
Students ?
11.1
Student/teacher ratio ?
21.1%
Free/discounted lunch ?
 242 Suncook Valley Rd.
       Alton, NH  03809-4629

(603) 875-3800

District: Prospect Mountain JMA School District


Feeder schools for Prospect Mountain High School:

Elementary:    Alton Central School (Elem)
    Barnstead Elementary School
Racial breakdown:

White:
93.0%
Hispanic:
3.0%
Two or more races:
2.5%
more
 See top rated New Hampshire high schools

 Compare Prospect Mountain High School to nearby high schools!
At a glance
Ranking trend: Rebounding — 31st percentile in 2019 → 62nd in 2025
Strengths
Ranking is rebounding — up to 62nd (2025) from a 31st-percentile low (2019)
Above the New Hampshire median (62nd percentile)
Small classes — about 11 students per teacher
Worth a look
!Mathematics scores 22 pts below the New Hampshire average
Students meeting standards (2024-2025) ?
This school45%
District avg45%
New Hampshire avg46%
33rd of 86
New Hampshire public high schools ?
Top 38%▼ down 6 pts since 2015
From top 32% (2015) to top 38% (2025)
See the entire ranking list of New Hampshire High Schools →
SchoolDigger rating ?
67th of 158Prospect Mountain JMA School District among New Hampshire districts
Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankNew Hampshire percentileRating
202552.833 of 8661.6%★★★☆☆
202438.149 of 8743.7%★★☆☆☆
202347.838 of 8555.3%★★★☆☆
202243.344 of 8548.2%★★★☆☆
202141.649 of 8441.7%★★☆☆☆
201937.049 of 7131.0%★★☆☆☆
201842.248 of 8140.7%★★☆☆☆
201757.538 of 8253.7%★★★☆☆
201664.127 of 8467.9%★★★★☆
201567.225 of 7767.5%★★★☆☆
201457.136 of 8557.6%★★★☆☆
201359.330 of 8363.9%★★★☆☆
201261.327 of 8367.5%★★★★☆
201134.861 of 8124.7%★☆☆☆☆
201051.842 of 8148.1%★★☆☆☆
200944.447 of 7940.5%★★☆☆☆

Female

YearAvg scoreStatewide rankNew Hampshire percentileRating
202552.132 of 8060.0%★★★☆☆
202453.934 of 8158.0%★★★☆☆
202350.735 of 7855.1%★★★☆☆
202224.862 of 7921.5%★☆☆☆☆
202129.941 of 5930.5%★★☆☆☆
201956.123 of 6363.5%★★★☆☆
201851.827 of 6055.0%★★★☆☆

Male

YearAvg scoreStatewide rankNew Hampshire percentileRating
202549.236 of 7853.8%★★★☆☆
202428.558 of 8229.3%★★☆☆☆
202346.335 of 7855.1%★★★☆☆
202267.520 of 7874.4%★★★★☆
202151.826 of 6056.7%★★★☆☆
201917.852 of 6114.8%★☆☆☆☆
201833.140 of 6134.4%★★☆☆☆

Special Education

YearAvg scoreStatewide rankNew Hampshire percentileRating
202596.22 of 3594.3%★★★★★
201933.623 of 3125.8%★☆☆☆☆

White

YearAvg scoreStatewide rankNew Hampshire percentileRating
202556.927 of 8668.6%★★★★☆
202436.053 of 8739.1%★★☆☆☆
202345.438 of 8354.2%★★★☆☆
202245.441 of 8551.8%★★★☆☆
202135.838 of 6743.3%★★☆☆☆
201933.644 of 6633.3%★★☆☆☆
201840.633 of 6448.4%★★★☆☆
How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)
Special Education (2025)94th percentile+33 vs school
White (2025)69th percentile+7 vs school
Female (2025)60th percentile~ school
Male (2025)54th percentile-8 vs school
By subject vs New Hampshire (2024-2025) ?
Reading67%+12 vs state
Science49%+11 vs state
Mathematics20%-22 vs state

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1 rating
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Frequently Asked Questions about Prospect Mountain High School

Prospect Mountain High School is fed by the following schools:

Elementary : Alton Central School (Elem)
Elementary : Barnstead Elementary School

Students at Prospect Mountain High School are 93% White, 3% Hispanic, 2% Two or more races.

Prospect Mountain High School ranks 33rd of 86 New Hampshire high schools. SchoolDigger rates this school 3 stars out of 5.

In the 2024-25 school year, 402 students attended Prospect Mountain High School.


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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the New Hampshire Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.





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