Londonderry High School is a public secondary school serving grades 9 through 12 in the town of Londonderry, New Hampshire, United States. It is the sole secondary school in the Londonderry School District. It was constructed in 1972 as a junior high school and adopted its current role in 1982.
Serving 1,289 students in grades 9-12, Londonderry Senior High School ranks in the top 30% of all schools in New Hampshire for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 42% (which is equal to the New Hampshire state average of 42%). The percentage of students achieving proficiency in reading/language arts is 67% (which is higher than the New Hampshire state average of 51%).
The student-teacher ratio of 12:1 is higher than the New Hampshire state level of 11:1.
Minority enrollment is 11% of the student body (majority Hispanic), which is lower than the New Hampshire state average of 18% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 1,289 students
- Student-Teacher Ratio: 12:1
- Minority Enrollment: 11%
- Graduation Rate: 93% (Top 20% in NH)
- Overall Testing Rank: Top 30%
- Math Proficiency: 42% (Top 50%)
- Reading Proficiency: 67% (Top 20%)
- Science Proficiency: 35% (Btm 50%)
- Source: National Center for Education Statistics (NCES), NH Dept. of Education
Top Rankings
Londonderry Senior High School ranks among the top 20% of public schools in New Hampshire for:
Category
Attribute
Reading/Language Arts Proficiency
Graduation Rate
School Overview
Londonderry Senior High School's student population of 1,289 students has declined by 9% over five school years.
The teacher population of 108 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
1,289 students
Total Classroom Teachers
108 teachers
Year Founded
1978
Colors
Royal blue, Scarlet
School Rankings
Londonderry Senior High School ranks within the top 30% of all 455 schools in New Hampshire (based off of combined math and reading proficiency testing data).
The diversity score of Londonderry Senior High School is 0.21, which is less than the diversity score at state average of 0.33. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#135 out of 455 schools
(Top 30%)
(Top 30%)
Math Test Scores (% Proficient)
42%
42%
Reading/Language Arts Test Scores (% Proficient)
67%
51%
Science Test Scores (% Proficient)
35%
36%
Student-Teacher Ratio
12:1
11:1
American Indian
n/a
n/a
Asian
2%
3%
Hispanic
5%
8%
Black
1%
2%
White
89%
82%
Hawaiian
n/a
n/a
Two or more races
3%
5%
All Ethnic Groups
Graduation Rate
93%
88%
Eligible for Free Lunch
9%
20%
Eligible for Reduced Lunch
2%
4%
School Statewide Testing
School District Name
Londonderry School District
Source: National Center for Education Statistics (NCES), NH Dept. of Education
School Notes
- School Mascot: Lancer
Frequently Asked Questions
What is Londonderry Senior High School's ranking?
Londonderry Senior High School is ranked #135 out of 455 schools, which ranks it among the top 30% of public schools in New Hampshire.
What schools are Londonderry Senior High School often compared to?
Londonderry Senior High Schoolis often viewed alongside schools like Pinkerton Academy by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
42% of students have achieved math proficiency (compared to the 42% NH state average), while 67% of students have achieved reading proficiency (compared to the 51% NH state average).
What is the graduation rate of Londonderry Senior High School?
The graduation rate of Londonderry Senior High School is 93%, which is higher than the New Hampshire state average of 88%.
How many students attend Londonderry Senior High School?
1,289 students attend Londonderry Senior High School.
What is the racial composition of the student body?
89% of Londonderry Senior High School students are White, 5% of students are Hispanic, 3% of students are Two or more races, 2% of students are Asian, and 1% of students are Black.
What is the student-teacher ratio of Londonderry Senior High School?
Londonderry Senior High School has a student ration of 12:1, which is higher than the New Hampshire state average of 11:1.
What grades does Londonderry Senior High School offer ?
Londonderry Senior High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Londonderry Senior High School part of?
Londonderry Senior High School is part of Londonderry School District.
School Reviews
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