Serving 698 students in grades 9-12, North Mason Senior High School ranks in the bottom 50% of all schools in Washington for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 15-19% (which is lower than the Washington state average of 41%). The percentage of students achieving proficiency in reading/language arts is 50-54% (which is approximately equal to the Washington state average of 53%).
The student-teacher ratio of 19:1 is higher than the Washington state level of 16:1.
Minority enrollment is 39% of the student body (majority Hispanic), which is lower than the Washington state average of 52% (majority Hispanic).
Quick Facts (2025-26)
- Grades: 9-12
- Enrollment: 698 students
- Student-Teacher Ratio: 19:1
- Minority Enrollment: 39%
- Graduation Rate: 75-79% (Btm 50% in WA)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 15-19% (Btm 50%)
- Reading Proficiency: 50-54% (Top 50%)
- Science Proficiency: 45-49% (Btm 50%)
- Source: National Center for Education Statistics (NCES), WA Dept. of Education
School Overview
North Mason Senior High School's student population of 698 students has declined by 7% over five school years.
The teacher population of 36 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
698 students
Gender %
Total Classroom Teachers
36 teachers
School Calendar
School Rankings
North Mason Senior High School ranks within the bottom 50% of all 2,088 schools in Washington (based off of combined math and reading proficiency testing data).
The diversity score of North Mason Senior High School is 0.55, which is less than the diversity score at state average of 0.69. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#1476 out of 2088 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
15-19%
41%
Reading/Language Arts Test Scores (% Proficient)
50-54%
53%
Science Test Scores (% Proficient)
45-49%
49%
Student-Teacher Ratio
19:1
16:1
American Indian
2%
1%
Asian
2%
9%
Hispanic
28%
26%
Black
1%
5%
White
61%
48%
Hawaiian
n/a
2%
Two or more races
6%
9%
All Ethnic Groups
Graduation Rate
75-79%
84%
Eligible for Free Lunch
41%
49%
Eligible for Reduced Lunch
4%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), WA Dept. of Education
Profile last updated: 02/09/2025
Frequently Asked Questions
What is North Mason Senior High School's ranking?
North Mason Senior High School is ranked #1476 out of 2,088 schools, which ranks it among the bottom 50% of public schools in Washington.
What schools are North Mason Senior High School often compared to?
North Mason Senior High Schoolis often viewed alongside schools like Shelton High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
15-19% of students have achieved math proficiency (compared to the 41% WA state average), while 50-54% of students have achieved reading proficiency (compared to the 53% WA state average).
What is the graduation rate of North Mason Senior High School?
The graduation rate of North Mason Senior High School is 75-79%, which is lower than the Washington state average of 84%.
How many students attend North Mason Senior High School?
698 students attend North Mason Senior High School.
What is the racial composition of the student body?
61% of North Mason Senior High School students are White, 28% of students are Hispanic, 6% of students are Two or more races, 2% of students are American Indian, 2% of students are Asian, and 1% of students are Black.
What is the student-teacher ratio of North Mason Senior High School?
North Mason Senior High School has a student ration of 19:1, which is higher than the Washington state average of 16:1.
What grades does North Mason Senior High School offer ?
North Mason Senior High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is North Mason Senior High School part of?
North Mason Senior High School is part of North Mason School District.
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