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Best public schools in Portsmouth, NH

6 public schools in Portsmouth: 4 elementary · 1 middle · 1 high. Ranked by our score, based on 2025-26 state test results.

Rankings renumber to share equal ranks and fill gaps when schools are hidden. Scores compare each school with schools of the same type across New Hampshire.

Elementary schools

4 schools in Portsmouth, best first
1
Mary C. Dondero Elementary School 94.9
Portsmouth School District · Grades K-5 · 337 students
ELA 78%Math 79%Science 70%
#11 of 205 in New Hampshire
2
New Franklin School 94.4
Portsmouth School District · Grades K-5 · 256 students
ELA 85%Math 80%Science 54%
#12 of 205 in New Hampshire
3
Little Harbour School 93.4
Portsmouth School District · Grades K-5 · 335 students
ELA 78%Math 84%Science 51%
#14 of 205 in New Hampshire
–
PEEP School - Pre School Program —
Portsmouth School District · Grades PK · 18 students
No published test results

Middle schools

1 school in Portsmouth
1
Portsmouth Middle School 91.4
Portsmouth School District · Grades 6-8 · 472 students
ELA 77%Math 62%Science 52%
#8 of 87 in New Hampshire

High schools

1 school in Portsmouth
1
Portsmouth High School 93.9
Portsmouth School District · Grades 9-13 · 1,025 students
ELA 82%Math 51%Science 61%
#6 of 90 in New Hampshire

School districts serving Portsmouth

Nearby cities and towns