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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
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
Grade 9
180
Grade 10
218
Grade 11
171
Grade 12
166
Student demographics
White
43659%
DISTRICT 59% · STATE 47%
Hispanic
21730%
DISTRICT 30% · STATE 27%
Black
61%
DISTRICT 1% · STATE 5%
Asian
132%
DISTRICT 1% · STATE 9%
Two+
476%
DISTRICT 8% · STATE 9%
Native American
101%
DISTRICT 1% · STATE 1%
Pacific Islander
61%
DISTRICT 1% · STATE 2%
Student head counts by race/ethnicity from federal NCES enrollment data. 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

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

7-year change

SY 2017-18 vs SY 2024-25
Enrollment
735
-17 (-2%) vs 2017
Student : Teacher
21.3:1
was 21.9:1
% White
59%
was 73%
% Hispanic
30%
was 19%
% Black
1%
was 1%
% Asian
2%
was 1%
Source: NCES Common Core of Data

About North Mason Senior High School

Located at 150 E North Mason School Road, in Belfair, Washington, North Mason Senior High School is a reasonably sized four-year high school that teaches 735 students (grades 9 through 12), one of the schools within North Mason School District. Compared to the state average of about 573 students per school, that is 28% larger than typical.

North Mason School District runs 7 schools in total, collectively educating 2,337 students. North Mason Senior High School is one of those campuses.

Looking at the student body, North Mason Senior High School logs that White students make up the majority at 59%. Other groups include 30% Hispanic, 6% multiracial. The wider county runs roughly 77% White, putting the school's mix considerably less White than the area baseline.

Looking at the economic backdrop, On paper, North Mason Senior High School has 34 full-time-equivalent teachers, translating to a class-load average of around 21.3:1. That tracks the state average closely. Around 51% of the student body qualifies for free or reduced-price meals, a commonly cited indicator of low-income enrollment. By comparison, Mason County runs at roughly 63%, so the school's eligibility rate is meaningfully below the surrounding baseline.

With demographic context factored in, North Mason Senior High School falls in the UNDERPERFORMING tier of the BeatsExpectations residual. Given its student profile, a typical campus would land near 46.0%; this one comes in at 28.4%, -17.6 points off the demographic line.

Zooming out to the county, community-level numbers for Mason County indicate median household income runs about $83,270, 22% of adults hold a bachelor's degree or higher, and census figures put the poverty rate at about 8%. North Mason Senior High School is one of 26 public schools in Mason County (combined enrollment of about 8,539 students).

Nearest neighbor: North Mason Homelink Program, around 0.1 miles off. 6 of the 8 nearest public schools sit inside a five-mile radius. Among the 6 schools in that immediate cluster with test data (this one included), North Mason Senior High School ranks 6th on composite proficiency, below the local average of 42.0%.

The campus sits in an outlying setting.

Looking at the recent track record. Looking back 7 years, enrollment at North Mason Senior High School has changed only slightly, going from 752 students in 2018 to 735 in 2025. Over the same period, the White share declined from 73% to 59%.

Inside the community feed, the feed for North Mason Senior High School typically covers school events, parent volunteer needs, and clubs. The community welcomes input from current and former families.

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/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.
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