Enrollment
1,289
New Hampshire · 2024-25 NCES data
High school (grades 9-12) · Londonderry, NH
Londonderry Senior High School
Federal NCES profile for Londonderry Senior High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 53/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 330441000484
👥 S:T ratio 58
📚 AP courses 70
🌟 Gifted program 30
🎓 Counselors 68
📋 Attendance 40
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Londonderry Senior High School earns 53/100 on the Resource Investment Index, with class sizes near the New Hampshire median. It is also one of the largest schools in New Hampshire.
- #2 of 6
- public schools in Londonderry · Resource Index
- 53
- Resource Index · Higher
- 10.6:1
- students per teacher
- 7.1%
- free-lunch eligible
Londonderry Senior High School has class sizes near the New Hampshire median. Computed live against every New Hampshire school reporting to NCES.
By Resource Investment Index, Londonderry Senior High School ranks #2 of 6 public schools in Londonderry, NH.
School address
District: Londonderry School District · New Hampshire
NCES ID 330441000484 Verify on NCES CCD record →
Teachers (FTE)
122.0
Federal CCD staff survey
Students per teacher
10.6:1
vs 11.3:1 New Hampshire avg
-6% vs state
Free-lunch eligible
7.1%
vs 21.5% New Hampshire avg
-67% vs state
Student-teacher ratio in context
How Londonderry Senior High School compares with New Hampshire and U.S. medians
What stands out at Londonderry Senior High School
Londonderry Senior High School is a lower-poverty, large high school in Londonderry, New Hampshire, enrolling 1,289 students.
At 10.6:1, 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.
Economic need runs somewhat below the state's typical profile, with 7.1% of students eligible for free meals.
By headcount it is one of the larger campuses in New Hampshire, bigger than 98% of state schools at 1,289 students.
Its Resource Investment Index lands in the upper third of 500 scored New Hampshire schools.
Against 18 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #3.
Its student body is predominantly White (89% of enrollment) (diversity index 20/100).
On the academic-pipeline side it reports 14 Advanced Placement courses.
Counselor coverage is strong, about 161 students per counselor, inside the American School Counselor Association's recommended 250:1.
Attendance runs somewhat below the norm, with 24.0% of students chronically absent per the 2021-22 civil-rights collection.
The surrounding Londonderry School District spends $20,160 per pupil, 29% below the New Hampshire average, a leaner-resourced district than most.
Londonderry School District also operates Londonderry Middle School (918 students) and Matthew Thornton Elementary School (537 students) alongside Londonderry Senior 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
How Londonderry Senior High School compares
Londonderry Senior 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 | 10.6:1 | ▼ 6% | 11.3:1 | 15.7:1 |
| Free-lunch eligible | 7.1% | ▼ 67% | 21.5% | 51.7% |
| Enrollment | 1,289 | top 2% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.6:1
Leaner classes than 85% of US schools, among the more generously staffed nationally.
1,289
Bigger than 95% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
7.1%
free-lunch eligible
- 67% below the New Hampshire average of 21.5%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
10.6:1
students per teacher
- 6% below state mean
Top 45% in New Hampshire - lower ratio than 55% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
24.0%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$20,160
per pupil, district-wide
- below New Hampshire avg of $28,358
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors8.0 FTE
Per 161 students, the combined health-and-guidance staffing load for this school.
Discipline context
73
in-school suspensions + 62 out-of-school
Suspension rate: 5.7 per 100 students. Combined in-school and out-of-school rate: 10.5 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
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.
Student demographics
White 89.0%
Hispanic or Latino 4.8%
Two or More 3.4%
Asian 1.5%
African American 1.2%
American Indian / Alaska Native 0.1%
Native Hawaiian / Pacific Islander 0.1%
Largest group: White at 89.0% of enrollment.
Student-body diversity index 20.4/100
Simpson diversity index - at 20.4, Londonderry Senior High School is less mixed than the New Hampshire school average of 24.3.
Programs
AP courses offered 14
Funding & spending
District-wide per-pupil expenditure for Londonderry School District, which includes Londonderry Senior High School.
$20,160
Per student
-29%
vs New Hampshire
Avg $28,358
+21%
vs U.S.
Avg $16,593
Revenue mix
Local 71.4%
State 22.4%
Federal 6.2%
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.
How Londonderry Senior High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Londonderry Middle School | Smaller | Similar economic need | Similar S:T ratio |
| Matthew Thornton Elementary School | Smaller | Similar economic need | Similar S:T ratio |
| North Londonderry Elementary School | Smaller | Similar economic need | Similar S:T ratio |
| South Londonderry Elementary School | Smaller | Similar economic need | Lower S:T ratio |
| Moose Hill School | Smaller | Similar economic need | Higher S:T ratio |
Comparisons are relative to Londonderry Senior High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 918
- Students per teacher
- 10.8:1
- Resource Index
- 47/100
- Enrollment
- 537
- Students per teacher
- 10.5:1
- Resource Index
- 45/100
- Enrollment
- 451
- Students per teacher
- 11:1
- Resource Index
- 35/100
- Enrollment
- 412
- Students per teacher
- 8.6:1
- Resource Index
- 51/100
- Enrollment
- 343
- Students per teacher
- 14.9:1
- Resource Index
- 25/100
Similar high schools statewide
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.
Similar enrollment (~1,289 students)
Next steps
Verify locally before acting on Londonderry Senior High School's federal record.
- Compare Londonderry Senior High School against another school. Compare schools
- Londonderry School District's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
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.
Frequently asked questions about Londonderry Senior High School
How many students attend Londonderry Senior High School?
Londonderry Senior High School has 1,289 students enrolled. It is a high school in Londonderry, NH.
What is the student-teacher ratio at Londonderry Senior High School?
The student-teacher ratio at Londonderry Senior High School is 10.6:1, which is 6% lower than the New Hampshire average of 11.3:1 and 32% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Londonderry Senior High School?
7.1% of students at Londonderry Senior High School are eligible for free lunch, compared to the New Hampshire average of 21.5%.
What is the racial and ethnic makeup of Londonderry Senior High School?
The largest demographic group at Londonderry Senior High School is White at 89.0% of enrollment, in Londonderry, NH.
What is the Resource Investment Index for Londonderry Senior High School?
Londonderry Senior High School has a Resource Investment Index of 53/100 (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).
How does Londonderry Senior High School rank among public schools in Londonderry?
By Resource Investment Index, Londonderry Senior High School ranks #2 of 6 public schools in Londonderry, 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 Londonderry on the city page.
Is Londonderry Senior High School a good school?
Londonderry Senior High School earns 53/100 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.
What other schools are in Londonderry School District?
Besides Londonderry Senior High School, Londonderry School District also operates Londonderry Middle School (918 students), Matthew Thornton Elementary School (537 students), and North Londonderry Elementary School (451 students). See the Londonderry School District district page for the complete list.
Related tools
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.