Enrollment
402
High
STATE 496
SCHOOL COMMUNITY·PROSPECT MOUNTAIN JMA SCHOOL DISTRICT·NCES 330004900619
Prospect Mountain High School
242 Suncook Valley Rd., Alton, NH 03809 · (603) 875-3800 · Belknap County
GRADES 09–13HIGH41-RURALREGULAR SCHOOL402 STUDENTS
Student : Teacher
11.1:1
36 FTE teachers
STATE 11.2:1
Free / Reduced Lunch
21%
85 students
STATE 26%
Community
0
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Student demographics
Student head counts by race/ethnicity from federal NCES enrollment data. Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
QUIET COMMUNITY
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START A DISCUSSIONTest scores
NHSAS 2024-25 . % Above ProficientEnglish Language Arts
67.0%
NH avg 55.2%
Math
20.0%
NH avg 43.0%
What this means: On the NHSAS, New Hampshire's statewide test, about 67 of every 100 students at this school read and write at grade level and about 20 of 100 do math at grade level. Across all New Hampshire schools, those numbers are about 55 and 43.
Source: NHSAS. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
45.3%
composite math + reading, all grades
Predicted
49.9%
based on NH schools with similar FRL share
Beats by
-4.5pp
below demographic expectation
What this means: About 45% of students here test proficient in math and reading, compared with the roughly 50% typical for New Hampshire schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among New Hampshire's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
7-year change
SY 2017-18 vs SY 2024-25Enrollment
402
-74 (-16%) vs 2017
Student : Teacher
11.1:1
was 10.7:1
% White
93%
was 95%
% Hispanic
3%
was 2%
% Black
1%
was 0%
% Asian
1%
was 1%
Source: NCES Common Core of Data
About Prospect Mountain High School
Prospect Mountain High School is a small secondary school in Alton, New Hampshire, run under Prospect Mountain JMA School District. The school hosts 402 students in grades 9 through 13.
Prospect Mountain High School sits inside Prospect Mountain JMA School District, the local public-school operator responsible for the campus.
Demographically, Prospect Mountain High School logs that 93% of students identify as White, making the school strongly White-majority; the rest looks like 3% Hispanic, 2% multiracial. That mix tracks the wider county fairly closely.
In terms of school funding signals, Prospect Mountain High School records 36 full-time-equivalent teachers, putting the student-to-teacher ratio at about 11.1:1. The state averages about 11.2:1, putting this campus right in line with peers. About 21% of enrolled students meet the income threshold for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. Set against Belknap County (around 29%), the school's rate is somewhat below typical.
After controlling for student poverty, Prospect Mountain High School sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 49.9%; this one delivers 45.3%.
In the surrounding community, the surrounding county (Belknap County) shows that median household earnings sit near $92,783, about 34% of the adult population holds a bachelor's degree or above, and the poverty rate sits near 6%. Prospect Mountain High School is one of 23 public schools in Belknap County (combined enrollment of about 7,344 students).
The closest other public school is Alton Central School (Elem), roughly 1.1 miles away. 2 of the 8 nearest public schools sit inside a five-mile radius. Ranking that nearby cluster on reported proficiency puts Prospect Mountain High School at 4th of 9; the average score across the group is 42.3%.
Prospect Mountain High School operates from a small-town location.
Five-year trend. Prospect Mountain High School's enrollment has edged down 16% since 2018, when it stood at 476 (now 402).
Within the allk12 community for this school, the page collects discussion, questions, and updates around pickup logistics, teacher feedback, and after-school programs. Members of the school community can share what they know.
Belknap County at a glance
View full county profilePopulation
64,659
Census ACS
Median income
$92,783
Household, ACS
Bachelor's+
34%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
23
7,344 students
Quick facts
Related schools
Nearby schools
- Alton Central School (Elem)1.1 mi · 407
- New Durham Elementary School2.6 mi · 144
- Gilmanton Elementary School6.0 mi · 335
- Barnstead Elementary School6.6 mi · 449
- Valley View Community School7.5 mi · 245
- Farmington Senior High School7.6 mi · 214
Frequently asked questions
About Prospect Mountain High SchoolHow many students attend Prospect Mountain High School?
Prospect Mountain High School enrolls approximately 402 students in grades 09-13.
Is Prospect Mountain High School an elementary, middle, or high school?
Prospect Mountain High School is a high school covering grades 09-13.
How many students per teacher at Prospect Mountain High School?
Approximately 11.1:1 students per teacher at Prospect Mountain High School.
How diverse is Prospect Mountain High School?
Prospect Mountain High School reports a student body of 93% White, 3% Hispanic, 1% Black, 1% Asian, 2% Two or more.
Is Prospect Mountain High School public or private?
Prospect Mountain High School is a public K-12 school, overseen by Prospect Mountain JMA School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.