Portsmouth High School
🇺🇸 Official data · 2025Portsmouth, New Hampshire 03801 · Portsmouth School District
#18 of 89 high schools in New Hampshire
#1419 of 16,910 nationally
About Portsmouth High School
Portsmouth High School is a public high located in Portsmouth, in the Portsmouth School District school district of New Hampshire, United States. It caters for Grades 9–13. In 2025 it enrolled 1,017 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 79.1 out of 100, placing it in the top 10% of high schools in United States and 18th of 89 ranked high schools in New Hampshire. Its strongest component is community advantage (fewer free/reduced-price lunch) (98th percentile), and its weakest is math proficiency (67th percentile).
Other published figures: enrollment 1,017.
There are 6 schools in Portsmouth; Portsmouth High School ranks 5th of 5 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)52%
- Reading proficiency (30%)72%
- Community advantage (fewer free/reduced-price lunch) (25%)11%
- Students per teacher (15%)11.4
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Portsmouth High School by the official sources.
- Enrollment
- 1,017
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 11%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 11.4
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 72%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 52%
- Share of tested students proficient or above (all students, all grades).
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Schools near Portsmouth High School
Closest schools by straight-line distance, with their Success Index (US).
Little Harbour School
Portsmouth · Public elementary · Grades K–5
325 students · 1.3 km away
PEEP School - Pre School Program
Portsmouth · Public other · Grades PK–PK
24 students · 1.3 km away
Portsmouth Middle School
Portsmouth · Public middle · Grades 6–8
486 students · 1.6 km away
New Franklin School
Portsmouth · Public elementary · Grades K–5
247 students · 2.2 km away
Mary C. Dondero Elementary School
Portsmouth · Public elementary · Grades K–5
328 students · 2.4 km away
Rye Elementary School
Rye · Public elementary · Grades PK–4
211 students · 3.5 km away
Maude H. Trefethen School
New Castle · Public elementary · Grades K–6
33 students · 3.6 km away
Robert W Traip Academy
Kittery · Public high · Grades 9–12
294 students · 3.7 km away
Rye Junior High School
Rye · Public middle · Grades 5–8
175 students · 5.0 km away
Horace Mitchell Primary School
Kittery Point · Public elementary · Grades PK–3
315 students · 6.0 km away
Similar schools
Public high schools in New Hampshire with a comparable Enrollment.
Goffstown High School
Goffstown · Public high · Grades 9–12
1,008 students
Winnacunnet High School
Hampton · Public high · Grades 9–13
993 students
Merrimack High School
Merrimack · Public high · Grades 9–12
1,057 students
Alvirne High School
Hudson · Public high · Grades 9–13
976 students
Windham High School
Windham · Public high · Grades 9–12
945 students
Timberlane Regional High School
Plaistow · Public high · Grades 9–12
944 students
Frequently asked questions
Is Portsmouth High School a good school?
Portsmouth High School has a Success Index (US) of 79.1 out of 100 (Top 10% of high schools in United States) and ranks #18 of 89 in New Hampshire. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Portsmouth High School rank in New Hampshire?
Portsmouth High School ranks #18 of 89 high schools in New Hampshire and #1419 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend Portsmouth High School?
Portsmouth High School had 1,017 students in 2025.
Is Portsmouth High School a elementary school or a high school?
Portsmouth High School is classified as a high covering Grades 9–13. It is a public school.
What other schools are near Portsmouth High School?
There are 10 schools within 15 km of Portsmouth High School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.