Enrollment
1,057
New Hampshire · 2024-25 NCES data
High school (grades 9-12) · Merrimack, NH
Federal NCES profile for Merrimack High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 62/100.
The verdict
Merrimack High School earns 62/100 on the Resource Investment Index, with class sizes near the New Hampshire median. It is also one of the largest schools in New Hampshire.
Merrimack High School has class sizes near the New Hampshire median. Computed live against every New Hampshire school reporting to NCES.
By Resource Investment Index, Merrimack High School ranks #1 of 7 public schools in Merrimack, NH.
NCES ID 330474000278 Verify on NCES CCD record →
Enrollment
1,057
New Hampshire · 2024-25 NCES data
Teachers (FTE)
95.0
Federal CCD staff survey
Students per teacher
11.1:1
vs 11.3:1 New Hampshire avg
-2% vs state
Free-lunch eligible
4.0%
vs 21.5% New Hampshire avg
-81% vs state
How Merrimack High School compares with New Hampshire and U.S. medians
At or below state median
11.1:1 - 0.2 below the New Hampshire state median of 11.3:1, indicating smaller average class loads than typical schools in the state.
Merrimack High School is a lower-poverty, large high school in Merrimack, New Hampshire, enrolling 1,057 students.
At 11.1:1, its student-teacher ratio sits close to the New Hampshire median, within a few percentage points of the 11.3:1 state norm, neither notably crowded nor notably small.
Comparatively few students face economic hardship here, 4.0% free-meal eligibility runs 81% below the New Hampshire average.
By headcount it is one of the larger campuses in New Hampshire, bigger than 97% of state schools at 1,057 students.
Its Resource Investment Index outscores 97% of the 500 New Hampshire schools with a score on record, a top-tier result on this measure.
Among 33 similarly sized, similarly resourced-need New Hampshire schools statewide, it ranks #2, a top-tier result once campus size and economic need are matched.
Its student body is predominantly White (87% of enrollment) (diversity index 23/100).
On the academic-pipeline side it reports 13 Advanced Placement courses.
Counselor coverage is strong, about 176 students per counselor, inside the American School Counselor Association's recommended 250:1.
Attendance runs somewhat below the norm, with 19.1% of students chronically absent per the 2021-22 civil-rights collection.
The surrounding Merrimack School District spends $20,427 per pupil, 28% below the New Hampshire average, a leaner-resourced district than most.
Merrimack School District also operates James Mastricola Upper Elementary School (533 students) and Reeds Ferry School (504 students) alongside Merrimack High School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
Merrimack High School on the metrics families compare, against New Hampshire and U.S. means.
| Metric | This school | vs New Hampshire | New Hampshire avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 11.1:1 | ▼ 2% | 11.3:1 | 15.7:1 |
| Free-lunch eligible | 4.0% | ▼ 81% | 21.5% | 51.7% |
| Enrollment | 1,057 | top 3% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Largest group: White at 87.4% of enrollment.
Simpson diversity index - at 23.2, Merrimack High School is about as mixed as the New Hampshire school average of 24.3.
District-wide per-pupil expenditure for Merrimack School District, which includes Merrimack High School.
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| James Mastricola Upper Elementary School | Smaller | Similar economic need | Higher S:T ratio |
| Reeds Ferry School | Smaller | Similar economic need | Higher S:T ratio |
| Thorntons Ferry School | Smaller | Similar economic need | Similar S:T ratio |
| Merrimack Middle School | Smaller | Similar economic need | Lower S:T ratio |
| James Mastricola Elementary School | Smaller | Similar economic need | Similar S:T ratio |
Comparisons are relative to Merrimack High School's own figures; each column derives from NCES Common Core of Data.
Matched by enrollment size and by staffing ratio across all of New Hampshire, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Merrimack High School's federal record.
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Merrimack High School has 1,057 students enrolled. It is a high school in Merrimack, NH.
The student-teacher ratio at Merrimack High School is 11.1:1, which is 2% lower than the New Hampshire average of 11.3:1 and 29% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
4.0% of students at Merrimack High School are eligible for free lunch, compared to the New Hampshire average of 21.5%.
The largest demographic group at Merrimack High School is White at 87.4% of enrollment, in Merrimack, NH.
Merrimack High School has a Resource Investment Index of 62/100 (higher reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
By Resource Investment Index, Merrimack High School ranks #1 of 7 public schools in Merrimack, NH. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Merrimack on the city page.
Merrimack High School earns 62/100 on the Resource Investment Index, with class sizes near the New Hampshire median. It is also one of the largest schools in New Hampshire. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
Besides Merrimack High School, Merrimack School District also operates James Mastricola Upper Elementary School (533 students), Reeds Ferry School (504 students), and Thorntons Ferry School (504 students). See the Merrimack School District district page for the complete list.
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.
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PlainSchools, “Merrimack High School, Merrimack NH.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/merrimack-high-school-nh
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