Private School Review - Established 2003
Dartmoor School
Dartmoor School
BASIS Independent School of Bellevue Top 3 ยท Highest Avg. SAT Score (WA)

Best Washington Private Schools (2026-27)

For the 2026-27 school year, there are 787 private schools serving 119,876 students in Washington, versus 2,552 public schools serving 1,096,693 students (10% of K-12 students attend private schools, vs. national average 10%).
The average private school tuition is $15,174 for elementary schools and $17,434 for high schools (view national tuition averages).
48% of schools are religiously affiliated, with most being Christian or Catholic.

Quick Facts (2026-27)

  • # Private Schools: 787
  • # Students Served: 119,876
  • Average Tuition: $15,160
  • % Students on Financial Aid: 28%
  • Acceptance Rate: 85%
  • Average Class Size: 15 students
  • % Students of Color: 32%
  • View Washington School Trends

Quick Facts (2026-27)

  • # Private Schools: 787
  • # Students Served: 119,876
  • Average Tuition: $15,160
  • % Students on Financial Aid: 28%
  • Acceptance Rate: 85%
  • Average Class Size: 15 students
  • % Students of Color: 32%
  • View Washington School Trends

Top Ranked Washington Private Schools (2026-27)

BASIS Independent School of Bellevue Photo
BASIS Independent School of Bellevue
Gr: K-12 | 331 students
Avg. class size: 20 students
Sports: 8 | Extracurriculars: 30
15749 NE 4th Street
Bellevue, WA 98008
(425) 906-5199
View Profile
BASIS Independent School of Bothell Photo
BASIS Independent School of Bothell
Gr: PK-12 | 322 students
Sports: 3 | Extracurriculars: 23
21540 30th Drive SE
Bothell, WA 98021
(425) 484-1579
View Profile
The Bear Creek School Photo
The Bear Creek School
Gr: NS-12 | 948 students
Avg. class size: 16 students
Sports: 10 | Extracurriculars: 14
Christian
8905 208th Avenue NE
Redmond, WA 98053
(425) 898-1720
(12)
View Profile
Bellevue Christian School โ€“ Clyde Hill Campus Photo
Bellevue Christian School โ€“ Clyde Hill Campus
Gr: 7-12 | 1,037 students
Avg. class size: 17 students
Sports: 8
Christian
1701 98th Ave Ne
Bellevue, WA 98004
(425) 460-3300
(3)
View Profile
Bellevue Christian School โ€“ Three Points Elementary Campus Photo
Bellevue Christian School โ€“ Three Points Elementary Campus
Gr: K-6 | 240 students
7800 Ne 28th St
Medina, WA 98039
(425) 454-4402
View Profile
Brightmont Academy - Sammamish Photo
Brightmont Academy - Sammamish
Gr: 1-12
Avg. class size: 1 student
Specialized Curriculum
4588 Klahanie Dr SE Suite 401
Issaquah, WA 98029
(425) 836-1600
View Profile
Brighton School of Mountlake Terrace Photo
Brighton School of Mountlake Terrace
Gr: PK-8 | 327 students
Avg. class size: 18 students
Sports: 6 | Extracurriculars: 2
21705 58th Avenue West
Mountlake Terrace, WA 98043
(425) 584-2361
(2)
View Profile
Charles Wright Academy Photo
Charles Wright Academy
Gr: PK-12 | 578 students
Avg. class size: 14 students
Sports: 11 | Extracurriculars: 47
7723 Chambers Creek Rd W University Place
University Place, WA 98467
(253) 620-8373
(6)
View Profile
Chestnut Hill Academy Photo
Chestnut Hill Academy
Gr: K-5 | 347 students
Avg. class size: 16 students
Sports: 2 | Extracurriculars: 15
13633 SE 26th St
Bellevue, WA 98005
(425) 372-2800
(10)
View Profile
Discovery Montessori School Photo
Discovery Montessori School
Gr: NS-K | 40 students
Avg. class size: 20 students
Sports: 1 | Extracurriculars: 3
Montessori School
2836 34th Ave West
Seattle, WA 98199
(206) 282-3848
(1)
View Profile
Show 10 more private schools in Washington (out of 786 total schools)
Loading...

Washington Private School Trends (10-Year)

787
Private Schools
+0.9% (+7 schools) 10-yr
119,876
Students
+17.9% (+18,208 students) 10-yr
$15,160
Avg. Tuition
+64.6% (+$5,949) 10-yr
15
Avg. Class Size
32%
Students of Color
+14.3% (+4.0 pp) 10-yr
12:1
Student-Teacher Ratio
Enrollment & Diversity
Category
This State (WA)
US
# Schools
787 Schools

Trends in Total Number of Private Schools

Year(WA) Total Schools
2025782
2024791
2023758
2022744
2021758
2020794
2019778
2018792
2017751
2016758
2015780
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Students
119,876 Students
5,688,087 Students

View Largest Washington Private Schools

Trends in the Average Number of Students Per Private School

YearWashington (WA) AvgNational
2025172179
2024170172
2023163174
2022157185
2021157180
2020151171
2019152175
2018150172
2017151180
2016148178
2015144167
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

% Average Students of Color
32%
34%

Percentage of Students of Color Trends (2015-2025)

YearWashington (WA) AvgNational
202531%34%
202429%34%
202332%33%
202229%33%
202128%32%
202027%32%
201927%31%
201826%31%
201730%32%
201629%32%
201528%32%
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Student By Grade

Distribution of Students By Grade Trends

GradeWashington
Nursey3,056
Pre-K18,705
Kind11,179
18,364
27,928
38,029
47,834
57,738
67,908
77,651
87,424
96,295
106,066
115,402
125,226
Not Listed1,071
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Academics
# Teachers
10,041 Teachers
508,611 Teachers
Average Student-Teacher Ratio
12:1
11:1

Student-Teacher Ratio Trends (2015-2025)

YearWashington (WA) AvgNational
202512:111:1
202412:111:1
202312:111:1
202212:111:1
202112:111:1
202012:112:1
201912:112:1
201812:112:1
201712:112:1
201612:112:1
201512:112:1
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

% Average Faculty w/Advanced Degree
59%
55%

View Washington Private Schools with the Most Educated Faculty

Percentage of Faculty With Advanced Degrees Trends (2015-2025)

YearWashington (WA) AvgNational
202558%55%
202457%54%
202358%54%
202257%54%
202157%54%
202057%54%
201956%53%
201855%53%
201755%53%
201654%52%
201555%52%
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Class Size
15 students
16 students

Class Size Trends (2015-2025)

YearWashington (WA) AvgNational
20251615
20241615
20231615
20221515
20211515
20201515
20191515
20181515
20171515
20161515
20151515
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Number of AP Courses
11 courses
13 courses

View Washington Private Schools Offering the Most AP Courses

Trends in Average Number of AP Courses Offered

YearWashington (WA) AvgNational
20251013
2024812
2023911
2022811
2021811
2020811
2019811
2018811
2017810
2016710
2015710
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average SAT score
1273
(Out of 1600)
1234

View Average Private School SAT Scores in Washington

SAT Score Trends (2017-2025)

YearWashington (WA) AvgNational
202512641233
202412571230
202312281228
202212351229
202112421229
202012331226
201912471226
201812411226
201712551233
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average ACT score
29
(Out of 36)
26

View Average Private School ACT Scores in Washington

ACT Score Trends (2017-2025)

YearWashington (WA) AvgNational
20252926
20242826
20232726
20222826
20212826
20202825
20192725
20182725
20172725
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Tuition & Aid
Average Yearly Tuition Cost
$15,160
$13,760

View Washington Private Schools By Tuition Cost

Tuition Cost Trends (2015-2025)

YearWashington (WA) AvgNational
2025$15,533$15,012
2024$14,062$13,254
2023$13,102$12,626
2022$12,138$12,187
2021$11,838$11,800
2020$11,300$11,512
2019$10,936$11,293
2018$10,668$11,017
2017$10,030$10,708
2016$9,472$10,356
2015$9,211$9,939
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Summer Program Cost
$845
$1,158

Summer Program Cost Trends (2018-2025)

YearWashington (WA) AvgNational
2025$810$1,152
2024$702$1,128
2023$1,305$1,156
2022$757$1,102
2021$728$1,125
2020$774$1,217
2019$788$1,305
2018$490$1,108
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average % on Financial Aid
28%
35%

Percent on Financial Aid Trends (2015-2025)

YearWashington (WA) AvgNational
202529%34%
202428%34%
202327%34%
202227%33%
202126%33%
202027%32%
201927%31%
201826%30%
201725%30%
201623%29%
201523%28%
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Financial Aid Grant
$8,970
$7,275

Financial Aid Grant Trends (2015-2025)

YearWashington (WA) AvgNational
2025$8,921$7,073
2024$8,821$6,930
2023$6,927$6,469
2022$6,141$6,289
2021$6,073$6,055
2020$5,578$5,921
2019$5,841$5,795
2018$5,265$5,456
2017$5,049$5,319
2016$5,147$5,105
2015$4,878$5,030
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Acceptance Rate
85%
85%

View Most Selective Private Schools in Washington

Acceptance Rate Trends (2015-2025)

YearWashington (WA) AvgNational
202582%81%
202485%85%
202385%85%
202285%85%
202185%85%
202085%85%
201984%85%
201884%85%
201784%85%
201682%85%
201581%85%
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Endowment Size
$13.19 million
$31.48 million

View Average Private School endowment in Washington

Endowment Trends (2020-2025)

YearWashington (WA) AvgNational
2025$25 M$39 M
2024$8 M$39 M
2023$6 M$39 M
2022$7 M$40 M
2021$7 M$40 M
2020$7 M$40 M
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Students by Ethnicity
0.64
0.65

View Washington Private Schools Minority Statistics

Diversity Score Trends

YearWashington (WA) AvgNational
20250.640.65
20240.640.65
20230.640.65
20220.620.64
20210.630.64
20200.630.64
20190.610.63
20180.620.63
20170.610.61
20160.600.61
20150.600.61
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# American Indian Students
1,226 Students
29,812 Students
% American Indian Students
1%
1%

Percentage of Private School Students of American Indian Trends

YearWashington (WA) AvgNational
20251%1%
20241%1%
20231%1%
20221%2%
20211%1%
20202%1%
20192%1%
20182%2%
20172%1%
20162%1%
20152%1%
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Asian Students
9,040 Students
264,420 Students
% Asian Students
8%
5%

Asian Student Percentage Trends

YearWashington (WA) AvgNational
20258%5%
20248%5%
20238%5%
20227%4%
20217%4%
20207%4%
20196%4%
20186%4%
20176%4%
20166%4%
20156%4%
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Hispanic Students
6,302 Students
506,622 Students
% Hispanic Students
5%
9%

Hispanic Student Percentage Trends

YearWashington (WA) AvgNational
20255%9%
20245%9%
20235%9%
20225%8%
20215%9%
20205%9%
20195%8%
20185%8%
20175%8%
20165%8%
20155%8%
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Black Students
3,815 Students
415,582 Students
% Black Students
3%
7%

Black Student Percentage Trends

YearWashington (WA) AvgNational
20253%7%
20243%7%
20233%8%
20223%7%
20213%7%
20203%8%
20193%7%
20183%7%
20173%7%
20163%7%
20153%8%
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# White Students
59,127 Students
2,927,904 Students
% White Students
50%
52%

White Student Percentage Trends

YearWashington (WA) AvgNational
202550%52%
202450%52%
202351%52%
202253%54%
202153%54%
202053%54%
201955%56%
201855%56%
201756%58%
201656%58%
201557%58%
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Hawaiian Students
651 Students
20,065 Students
% Hawaiian Students
1%
n/a
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
38,316 Students
1,474,432 Students
% of Others Students
32%
26%

Other Races Student Percentage Trends

YearWashington (WA) AvgNational
202532%26%
202432%26%
202331%25%
202230%25%
202130%25%
202029%24%
201929%24%
201829%23%
201728%22%
201628%22%
201527%21%
Download Table: Download as CSV | Download as XML | Download as JSON
Download Full State Data: Full State Dataset XML | Full State Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

All Ethnic Groups
Extracurriculars & Sports
Average Number of Extracurriculars
8 extracurriculars
9 extracurriculars
Average Number of Sports
6 sports
7 sports
Download state snapshot: CSV | XML | JSON Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission.

Frequently Asked Questions

What are the top ranked private schools in Washington?
The top-ranked private schools in Washington include Saint George's School, Annie Wright Schools, and BASIS Independent School of Bothell.
How many private schools are located in Washington?
There are 787 private schools are located in Washington.
How much do private schools cost in Washington?
The average private school tuition in Washington is $15,174 for elementary schools and $17,434 for high schools
How diverse are private schools in Washington?
Approximately 32% of students in Washington private schools are minority students (compared to the national percentage).
What percentage of students in Washington go to private school?
10% of all K-12 students in Washington attend private schools (compared to the national average of 10%).
What percentage of private schools are religiously affiliated in Washington?
48% of private schools in Washington are religiously affiliated, with most being Christian or Catholic.
Which private schools in Washington are often viewed compared to one another?

Recent Articles

Who Handles Medication at a Private School?
Who Handles Medication at a Private School?
Learn who handles student medication at private schools, what policies families should review, and which questions parents should ask about prescriptions, emergencies, storage, documentation, and daily administration.
Does Your Child Need a School With a Full-Time Nurse?
Does Your Child Need a School With a Full-Time Nurse?
Learn when a full-time school nurse matters, how private schools handle medications, chronic conditions and emergencies, and which health-service questions parents should ask before enrolling their child.
The Course Availability Test: Are Classes Really Offered?
The Course Availability Test: Are Classes Really Offered?
Learn how to verify whether private school catalog courses are actually offered each year, identify scheduling limitations, and ask better questions before choosing a school for your child today.

Quick Links

SCHOOL SEARCH TOOLS:
SCHOOL BY TYPE (WA):
OPEN-HOUSES & JOBS:
PUBLIC & BOARDING SCHOOLS:
PRIVATE SCHOOL DATA:

Most Popular Articles

Athletics Are Not Optional
Athletics Are Not Optional
 Enrollment Trends 2026: Private School Admissions Outlook
Enrollment Trends 2026: Private School Admissions Outlook
School Rankings by Category
School Rankings by Category

More Articles

Strategic School Choices
The Journey to Enrollment
Advanced Learning Frameworks
Well-Rounded Achievements
Leadership in Private Education