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
B
allk12 Grade
Scored higher than 63% of New Hampshire public high schools
- BTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- B-Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded New Hampshire public high schools
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, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 93 | 23% |
| Grade 10 | 112 | 28% |
| Grade 11 | 103 | 26% |
| Grade 12 | 89 | 22% |
Student demographics
13%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
STATE 33% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
QUIET COMMUNITY
Be the first to start a discussion at Prospect Mountain High School.
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 →
Schools most like Prospect Mountain High School
Prospect Mountain High School's state test result (45.3% proficient) is higher than 5 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Prospect Mountain High School this school | 402 | 21.1% | 45.3% |
| Belmont High School Belmont | 361 | 21.3% | 40.0% |
| Raymond High School Raymond | 326 | 21.5% | 37.7% |
| Monadnock Regional High School SWANZEY | 448 | 24.6% | 33.3% |
| Conval Regional High School Peterborough | 645 | 22.8% | 36.3% |
| Mascoma Valley Regional High School Canaan | 303 | 18.8% | 44.3% |
Matched among New Hampshire high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Prospect Mountain High School ranks
Among high schools| Measure | This school | In New Hampshire | In Belknap County |
|---|---|---|---|
| State test proficiency ranked highest first | 45.3% | #28 of 78 | #2 of 6 |
| Math proficiency ranked highest first | 20.0% | #54 of 74 | #4 of 6 |
| Reading proficiency ranked highest first | 67.0% | #31 of 78 | #3 of 6 |
| Enrollment ranked largest first | 402 | #45 of 103 | #3 of 6 |
| Students per teacher ranked fewest first | 11.1:1 | #20 of 68 | #3 of 6 |
| Diversity index ranked most diverse first | 13.3% | #55 of 68 | #3 of 6 |
| Free and reduced lunch ranked highest share first | 21.1% | #43 of 80 | #5 of 6 |
| Enrollment change since 2017-18 ranked steepest decline first | -15.5% | #16 of 60 | N/A |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
402
-38 (-9%) vs 2020
-27% since 2010-11, when it was 547
Student : Teacher
11.1:1
was 10.5:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 402 | 36.2 | 11.1:1 | 21% (85) |
| 2023-24 | 405 | 35.6 | 11.4:1 | 21% (84) |
| 2022-23 | 387 | N/A | N/A | 22% (86) |
| 2020-21 | 440 | 42 | 10.5:1 | 23% (103) |
| 2017-18 | 476 | 44.6 | 10.7:1 | 20% (93) |
| 2015-16 | 500 | 45 | 11.1:1 | 25% (125) |
| 2010-11 | 547 | 47 | 11.6:1 | 25% (137) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Prospect Mountain High School.
Since 2017-18: students down 16% (476 to 402); teachers down 19% (44.6 to 36.2).
About Prospect Mountain High School
Prospect Mountain High School is a low-enrollment high school in New Hampshire, with an address in Alton. Its enrollment is 402 students, spread over grades 9 through 13.
Prospect Mountain High School is listed under Prospect Mountain JMA School District in federal data.
White students account for 93% of the school's enrollment. After that, the student body is 3% Hispanic and 2% multiracial. Among Belknap County residents, the White share is about 93%. Its diversity index, the chance that two randomly chosen students belong to different racial or ethnic groups, is 13%.
Prospect Mountain High School lists 36.2 full-time-equivalent teachers; that is about 11.1 students per teacher. It is about the same as the 11.2:1 average for high schools in New Hampshire. Free or reduced-price lunch covers 21% of the student body. Compared with the 29% average for public schools in Belknap County, the school's rate is lower.
Prospect Mountain High School earns a B on the allk12 Grade, which blends test scores, results against poverty-based expectations, and the three-year trend. It scored higher than 63% of New Hampshire public high schools.
Based on its free or reduced-price lunch share, the BeatsExpectations model predicts an average proficiency rate across its state test results of 49.9% for Prospect Mountain High School. The school posts 45.3%, 4.5 points below the prediction.
In the wider Belknap County area, the median household earns about $92,783 a year, a bachelor's degree or higher is held by about 34% of adults, and the poverty rate is about 6%. Across Belknap County, 23 public schools serve about 7,344 students.
Prospect Mountain High School's nearest public school is Alton Central School (Elem) (about 1.1 miles). In all, 2 other public schools sit within five miles of Prospect Mountain High School. On state test proficiency, Prospect Mountain High School ranks 4th in a group of 9 nearby schools.
The school's setting, by NCES definition, is Rural: Fringe: in rural territory close to an urban area.
Over 4 years, enrollment fell by 38 students, from 440 to 402.
This page is set up for the Prospect Mountain High School community to discuss homework, tutoring, and testing dates. Current and former families are welcome to add their experience.
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.