Serving 1,022 students in grades 9-13, Portsmouth High School ranks in the top 10% of all schools in New Hampshire for overall test scores (math proficiency is top 20%, and reading proficiency is top 20%).
The percentage of students achieving proficiency in math is 61% (which is higher than the New Hampshire state average of 40%). The percentage of students achieving proficiency in reading/language arts is 79% (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 18% of the student body (majority Hispanic and Asian), which is equal to the New Hampshire state average of 18% (majority Hispanic).
Quick Stats (2025)
Grades: 9-13
Enrollment: 1,022 students
Student:Teacher Ratio: 12:1
Minority Enrollment: 18%
Graduation Rate
: 95% (Top 20% in NH)
Overall Testing Rank
: Top 10%
Math Proficiency
: 61% (Top 20%)
Reading Proficiency
: 79% (Top 5%)
Science Proficiency
: 35% (Btm 50%)
Source: National Center for Education Statistics (NCES), NH Dept. of Education
Portsmouth High School ranks within the top 10% of all 457 schools in New Hampshire (based off of combined math and reading proficiency testing data).
The diversity score of Portsmouth High School is 0.32, which is equal to the diversity score at state average of 0.32. The school's diversity has stayed relatively flat over five school years.
What percent of students have achieved state testing proficiency in math and reading?
61% of students have achieved math proficiency (compared to the 40% NH state average), while 79% of students have achieved reading proficiency (compared to the 51% NH state average).
What is the graduation rate of Portsmouth High School?
The graduation rate of Portsmouth High School is 95%, which is higher than the New Hampshire state average of 88%.
How many students attend Portsmouth High School?
1,022 students attend Portsmouth High School.
What is the racial composition of the student body?
82% of Portsmouth High School students are White, 8% of students are Two or more races, 5% of students are Hispanic, 4% of students are Asian, and 1% of students are Black.
What is the student:teacher ratio of Portsmouth High School?
Portsmouth High School has a student ration of 12:1, which is higher than the New Hampshire state average of 11:1.
What grades does Portsmouth High School offer ?
Portsmouth High School offers enrollment in grades 9-13
What school district is Portsmouth High School part of?
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Quick Stats (2025)
Grades: 9-13
Enrollment: 1,022 students
Student:Teacher Ratio: 12:1
Minority Enrollment: 18%
Graduation Rate
: 95% (Top 20%)
Overall Testing Rank
: Top 10%
Math Proficiency
: 61% (Top 20%)
Reading Proficiency
: 79% (Top 5%)
Science Proficiency
: 35% (Btm 50%)
Source: National Center for Education Statistics (NCES), NH Dept. of Education
