The bulletin board for America's public schools. Parents, teachers, students, and staff. One community per school.
SCHOOL COMMUNITY·NORTH MASON SCHOOL DISTRICT·NCES 530579000859

North Mason Senior High School

150 E North Mason School Road, Belfair, WA 98528 · (360) 277-2303 · Mason County
GRADES 09–12HIGH41-RURALTITLE IREGULAR SCHOOL735 STUDENTS
D
allk12 Grade
Scored higher than 9% of Washington public high schools
  • DTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • FBeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
  • A-Three-year trend Change in reading and math proficiency over the last three test years.

Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Washington public high schools

Enrollment
735
High
DISTRICT 398 · STATE 573
Student : Teacher
21.3:1
34 FTE teachers
DISTRICT 17.3:1 · STATE 21.6:1
Free / Reduced Lunch
51%
375 students
DISTRICT 57% · STATE 51%
Community
1
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 918024%
Grade 1021830%
Grade 1117123%
Grade 1216623%
Student demographics
56%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 56% · STATE 68% · US 70%
White
43659%
DISTRICT 59% · STATE 47% · US 43%
Hispanic
21730%
DISTRICT 30% · STATE 27% · US 30%
Black
61%
DISTRICT 1% · STATE 5% · US 15%
Asian
132%
DISTRICT 1% · STATE 9% · US 6%
Two+
476%
DISTRICT 8% · STATE 9% · US 5%
Native American
101%
DISTRICT 1% · STATE 1% · US 1%
Pacific Islander
61%
DISTRICT 1% · STATE 2% · US 0%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
41256%
Female
32344%

Discussions

+ POST

Test scores

Smarter Balanced + WCAS 2024-25 . % Met or Exceeded Standard
English Language Arts
50.0%
WA avg 58.4%
Math
18.1%
WA avg 51.2% . +10.5pp since 2014

What this means: On the Smarter Balanced + WCAS, Washington's statewide test, about 50 of every 100 students at this school read and write at grade level and about 18 of 100 do math at grade level. Across all Washington schools, those numbers are about 58 and 51. Math scores are up about 10 points since 2014.

Smarter Balanced + WCAS results by year

School yearEnglish Language ArtsMath
2024-2550.0%18.1%
2023-2434.6%12.7%
2022-2341.4%14.0%
2021-2249.6%10.1%
2018-1948.9%22.1%
2017-1860.3%29.7%
2016-178.8%11.2%
2015-1628.9%18.0%
2014-15N/A7.7%
% Met or Exceeded Standard, all students and all tested grades.
Source: Smarter Balanced + WCAS. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
UNDERPERFORMING
Bottom 10% of WA schools after controlling for student poverty
Actual proficiency
28.4%
composite math + reading, all grades
Predicted
46.0%
based on WA schools with similar FRL share
Beats by
-17.6pp
below demographic expectation

What this means: About 28% of students here test proficient in math and reading, below the roughly 46% typical for Washington schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

Schools most like North Mason Senior High School

North Mason Senior High School's state test result (28.4% proficient) is higher than 1 of the 3 schools below with a result.

SchoolStudentsLow-incomeProficient
North Mason Senior High School this school73551.0%28.4%
Sultan Senior High School
Sultan
58152.7%38.1%
Rochester High School
Rochester
60855.6%39.3%
Woodland High School
Woodland
66748.3%N/A
Mark Morris High School
Longview
91253.4%N/A
Selah High School
Selah
1,15951.3%26.9%
Matched among Washington high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where North Mason Senior High School ranks

Among high schools
MeasureThis schoolIn WashingtonIn Mason County
State test proficiency
ranked highest first
28.4%#233 of 271N/A
Math proficiency
ranked highest first
18.1%#244 of 321
▲ 34
N/A
Reading proficiency
ranked highest first
50.0%#226 of 327
▲ 79
N/A
3-year test score change
ranked biggest gain first
+4.2pp#53 of 259N/A
Enrollment
ranked largest first
735#184 of 570#2 of 7
Students per teacher
ranked fewest first
21.3:1#196 of 311N/A
Diversity index
ranked most diverse first
55.6%#152 of 316N/A
Free and reduced lunch
ranked highest share first
51.0%#181 of 386N/A
Enrollment change since 2017-18
ranked steepest decline first
-2.3%#147 of 164N/A
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
735
+88 (+14%) vs 2020
+40% since 1990-91, when it was 524
Student : Teacher
21.3:1
was 19.0:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2573534.521.3:151% (375)
2023-2469836.119.4:141% (285)
2022-236633618.4:139% (261)
2020-216473419.0:149% (319)
2017-1875234.321.9:147% (350)
2015-167353719.9:144% (325)
2010-117493521.4:137% (275)
2000-017583919.4:1N/A
1990-915242620.1:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for North Mason Senior High School.

Since 2017-18: students down 2% (752 to 735); teachers up 1% (34.3 to 34.5).

About North Mason Senior High School

North Mason Senior High School is a mid-sized high school in Washington, located in Belfair. Its enrollment is 735 students, spread over grades 9 through 12. That compares with an average of about 573 students for high schools in Washington.

North Mason Senior High School is a school in North Mason School District. The district has 7 schools and 2,337 students.

At North Mason Senior High School, 59% of students are White. The remaining students are 30% Hispanic and 6% multiracial. Census figures show Mason County is about 77% White. Measured by the diversity index, the student body scores 56%.

Staffing at North Mason Senior High School comes to 34.5 full-time-equivalent teachers, or 21.3:1. The 21.6:1 average for high schools in Washington is close to this figure. North Mason Senior High School counts 51% of students as eligible for free or reduced-price lunch. The gap from the 63% average for public schools in Mason County is 12 points.

North Mason Senior High School holds a D allk12 Grade, placing it above 9% of Washington public high schools.

The allk12 BeatsExpectations score for North Mason Senior High School is -17.6 points, in the bottom 10% of Washington. Its average proficiency rate across its state test results is 28.4%, and the predicted rate is 46.0%.

For Mason County, Census Bureau data show median household income comes to about $83,270, about 22% of adults have at least a bachelor's degree, and roughly 8% of residents are in poverty. There are 26 public schools in the county, enrolling about 8,539, North Mason Senior High School among them.

North Mason Senior High School is about 0.1 miles from James A. Taylor High School, its nearest public school. Within five miles are 6 other public schools. On proficiency, North Mason Senior High School is behind the 42.0% nearby average, ranking 6th of 6.

Under the NCES locale system, North Mason Senior High School is Rural: Fringe.

In 2024-25, the school enrolled 735, up from 647 in 2020-21. From 2020-21 to 2024-25, the ratio increased from 19.0:1 to 21.3:1.

The North Mason Senior High School discussion page is a place for special education services, counseling, and support programs. Teachers and staff are welcome to share updates too.

Mason County at a glance

View full county profile
Population
67,982
Census ACS
Median income
$83,270
Household, ACS
Bachelor's+
22%
Adults 25+
Poverty rate
8%
Below federal line
Schools in county
26
8,539 students

Quick facts

School name
North Mason Senior High School
District
North Mason School District
Address
150 E North Mason School Road, Belfair, WA 98528
Phone
(360) 277-2303
County
Mason County
Level
High
Grade range
09–12
Total enrollment
735
Teachers (FTE)
34
Student–teacher ratio
21.3:1
Free and reduced lunch
375 (51%)
Locale
41-Rural: Fringe
NCES ID
530579000859
Charter school
No
Virtual school
No

Related schools

Other schools in North Mason School District
Other schools in Belfair
Nearby schools

Frequently asked questions

About North Mason Senior High School
What is the total enrollment at North Mason Senior High School?
North Mason Senior High School enrolls approximately 735 students in grades 09-12.
What age range does North Mason Senior High School serve?
North Mason Senior High School serves students from grade 09 through grade 12.
How many students per teacher at North Mason Senior High School?
Approximately 21.3:1 students per teacher at North Mason Senior High School.
What is the student diversity at North Mason Senior High School?
Student demographics at North Mason Senior High School are roughly 59% White, 30% Hispanic, 1% Black, 2% Asian, 6% Two or more.
What district is North Mason Senior High School in?
North Mason Senior High School is part of North Mason School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
+ Post