Washington Private School Trends (10-Year)

788

Private Schools

+1.0% (+8 schools) 10-yr

118,587

Students

+16.6% (+16,919 students) 10-yr

$15,225

Avg. Tuition

+54.9% (+$5,393) 10-yr

Avg. Class Size

32%

Students of Color

+14.3% (+4.0 pp) 10-yr

12:1

Student-Teacher Ratio

Enrollment & Diversity

Trends in Total Number of Private Schools

Year	Washington (WA) Total	US Avg per State
2025	782	671
2024	791	703
2023	758	665
2022	744	612
2021	758	637
2020	794	684
2019	778	665
2018	792	677
2017	751	631
2016	758	644
2015	780	683

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Private schools up 24 in Washington, from 758 in 2016 to 782 in 2025.

# Students

118,587 Students

111,484 Students
avg. per state

View Largest Washington Private Schools

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Trends in Total Number of Private School Students

Year	Washington (WA) Total	US Avg per State
2025	120,481	111,945
2024	121,699	113,628
2023	110,868	108,484
2022	104,382	104,892
2021	106,414	106,817
2020	108,233	109,411
2019	105,462	108,956
2018	107,204	109,868
2017	100,946	106,255
2016	100,224	107,443
2015	101,668	108,505

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Private enrollment up 20% in Washington, rising from 100,224 in 2016 to 120,481 in 2025.

View Data

Distribution of Students By Grade Trends

Grade	Washington
Nursery	3,031
Pre-K	18,711
Kind	11,004
1	8,180
2	7,740
3	7,918
4	7,696
5	7,705
6	7,895
7	7,573
8	7,383
9	6,253
10	5,952
11	5,393
12	5,082
Not Listed	1,071

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Pre-K enrollment highest with 18,711 students, far above kindergarten’s 11,004 in Washington private schools.

Average School Size

170 Students

179 Students

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Trends in Average School Size

Year	Washington (WA) Avg	National
2025	172	179
2024	170	172
2023	163	174
2022	157	185
2021	157	180
2020	151	171
2019	152	175
2018	150	172
2017	151	180
2016	148	178
2015	144	167

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Average school size up 24 in Washington, from 148 students in 2016 to 172 in 2025, while the U.S. rose from 178 to 179.

% Average Students of Color

32%

34%

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Percentage of Students of Color Trends (2015-2025)

Year	Washington (WA) Avg	National
2025	31%	34%
2024	29%	34%
2023	32%	33%
2022	29%	33%
2021	28%	32%
2020	27%	32%
2019	27%	31%
2018	26%	31%
2017	30%	32%
2016	29%	32%
2015	28%	32%

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Students of color up 2 points in Washington private schools, from 29% in 2016 to 31% in 2025.

Academics

# Teachers

9,998 Teachers

509,242 Teachers

Average Student-Teacher Ratio

12:1

11:1

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Student-Teacher Ratio Trends (2015-2025)

Year	Washington (WA) Avg	National
2025	12:1	11:1
2024	12:1	11:1
2023	12:1	11:1
2022	12:1	11:1
2021	12:1	11:1
2020	12:1	12:1
2019	12:1	12:1
2018	12:1	12:1
2017	12:1	12:1
2016	12:1	12:1
2015	12:1	12:1

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% Average Faculty w/Advanced Degree

59%

55%

View Washington Private Schools with the Most Educated Faculty

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

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

Year	Washington (WA) Avg	National
2025	58%	55%
2024	57%	54%
2023	58%	54%
2022	57%	54%
2021	57%	54%
2020	57%	54%
2019	56%	53%
2018	55%	53%
2017	55%	53%
2016	54%	52%
2015	55%	52%

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Average Class Size

15 students

16 students

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Class Size Trends (2015-2025)

Year	Washington (WA) Avg	National
2025	16	15
2024	16	15
2023	16	15
2022	15	15
2021	15	15
2020	15	15
2019	15	15
2018	15	15
2017	15	15
2016	15	15
2015	15	15

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Class size up 1 student in Washington, from 15 in 2016 to 16 in 2025, while the national average stayed at 15.

Average Number of AP Courses

11 courses

13 courses

View Washington Private Schools Offering the Most AP Courses

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Trends in Average Number of AP Courses Offered

Year	Washington (WA) Avg	National
2025	9	12
2024	8	12
2023	9	11
2022	8	11
2021	8	11
2020	8	11
2019	8	11
2018	8	11
2017	8	10
2016	7	10
2015	7	10

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AP courses up 2 in Washington private schools, from 7 in 2016 to 9 in 2025.

Average SAT score

1274

(Out of 1600)

1235

View Average Private School SAT Scores in Washington

View Data

SAT Score Trends (2017-2025)

Year	Washington (WA) Avg	National
2025	1264	1233
2024	1257	1230
2023	1228	1228
2022	1235	1229
2021	1242	1229
2020	1233	1226
2019	1247	1226
2018	1241	1226
2017	1255	1233

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SAT score up 9 points in Washington private schools, rising from 1255 in 2017 to 1264 in 2025 and ending above the national 1233.

Average ACT score

(Out of 36)

View Average Private School ACT Scores in Washington

View Data

ACT Score Trends (2017-2025)

Year	Washington (WA) Avg	National
2025	29	26
2024	28	26
2023	27	26
2022	28	26
2021	28	26
2020	28	25
2019	27	25
2018	27	25
2017	27	25

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ACT score up 2 points in Washington private schools, rising from 27 in 2017 to 29 in 2025 while the national average went from 25 to 26.

Tuition & Aid

Average Yearly Tuition Cost

$15,225

$13,779

View Washington Private Schools By Tuition Cost

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Tuition Cost Trends (2015-2025)

Year	Washington (WA) Avg	National
2025	$14,580	$13,694
2024	$14,254	$13,340
2023	$13,300	$12,825
2022	$12,478	$12,321
2021	$12,197	$12,072
2020	$11,814	$11,784
2019	$11,480	$11,547
2018	$11,110	$11,280
2017	$10,578	$10,994
2016	$10,181	$10,614
2015	$9,832	$10,195

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Tuition up $4,399 in Washington, rising from $10,181 in 2016 to $14,580 in 2025.

Average Summer Program Cost

$856

$1,160

View Data

Summer Program Cost Trends (2018-2025)

Year	Washington (WA) Avg	National
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

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Summer cost up 65% in Washington, rising from $490 in 2018 to $810 in 2025, while the national cost was $1,152 in 2025.

Average % on Financial Aid

28%

35%

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Percent on Financial Aid Trends (2015-2025)

Year	Washington (WA) Avg	National
2025	29%	34%
2024	28%	34%
2023	27%	34%
2022	27%	33%
2021	26%	33%
2020	27%	32%
2019	27%	31%
2018	26%	30%
2017	25%	30%
2016	23%	29%
2015	23%	28%

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Financial aid up 6 points in Washington private schools, rising from 23% in 2016 to 29% in 2025.

Average Financial Aid Grant

$9,416

$7,693

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Financial Aid Grant Trends (2015-2025)

Year	Washington (WA) Avg	National
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

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Grant aid up $3,774 in Washington, rising from $5,147 in 2016 to $8,921 in 2025.

Average Acceptance Rate

85%

View Most Selective Private Schools in Washington

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Acceptance Rate Trends (2015-2025)

Year	Washington (WA) Avg	National
2025	86%	85%
2024	85%	85%
2023	85%	85%
2022	85%	85%
2021	85%	85%
2020	85%	85%
2019	84%	85%
2018	84%	85%
2017	84%	85%
2016	82%	85%
2015	81%	85%

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Acceptance rate up 4 points in Washington, rising from 82% in 2016 to 86% in 2025.

Average Endowment Size

$14 million

$31.69 million

View Average Private School endowment in Washington

View Data

Endowment Trends (2020-2025)

Year	Washington (WA) Avg	National
2025	$10 M	$40 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

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Endowment up 43% in Washington private schools, rising from $7M in 2020 to $10M in 2025.

Students by Ethnicity

0.64

0.65

View Washington Private Schools Minority Statistics

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Diversity Score Trends

Year	Washington (WA) Avg	National
2025	0.64	0.65
2024	0.64	0.65
2023	0.64	0.65
2022	0.62	0.64
2021	0.63	0.64
2020	0.63	0.64
2019	0.61	0.63
2018	0.62	0.63
2017	0.61	0.61
2016	0.60	0.61
2015	0.60	0.61

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Diversity score up 4 points in Washington private schools, rising from 0.60 in 2016 to 0.64 in 2025.

# American Indian Students

1,226 Students

29,810 Students

% American Indian Students

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Percentage of Private School Students of American Indian Trends

Year	Washington (WA) Avg	National
2025	1%	1%
2024	1%	1%
2023	1%	1%
2022	1%	2%
2021	1%	1%
2020	2%	1%
2019	2%	1%
2018	2%	2%
2017	2%	1%
2016	2%	1%
2015	2%	1%

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# Asian Students

9,040 Students

264,326 Students

% Asian Students

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Asian Student Percentage Trends

Year	Washington (WA) Avg	National
2025	8%	5%
2024	8%	5%
2023	8%	5%
2022	7%	4%
2021	7%	4%
2020	7%	4%
2019	6%	4%
2018	6%	4%
2017	6%	4%
2016	6%	4%
2015	6%	4%

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Asian student share up 2 points in Washington private schools, from 6% in 2016 to 8% in 2025.

# Hispanic Students

6,302 Students

506,562 Students

% Hispanic Students

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Hispanic Student Percentage Trends

Year	Washington (WA) Avg	National
2025	5%	9%
2024	5%	9%
2023	5%	9%
2022	5%	8%
2021	5%	9%
2020	5%	9%
2019	5%	8%
2018	5%	8%
2017	5%	8%
2016	5%	8%
2015	5%	8%

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# Black Students

3,815 Students

415,491 Students

% Black Students

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Black Student Percentage Trends

Year	Washington (WA) Avg	National
2025	3%	7%
2024	3%	7%
2023	3%	8%
2022	3%	7%
2021	3%	7%
2020	3%	8%
2019	3%	7%
2018	3%	7%
2017	3%	7%
2016	3%	7%
2015	3%	8%

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# White Students

59,127 Students

2,925,942 Students

% White Students

50%

52%

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

White Student Percentage Trends

Year	Washington (WA) Avg	National
2025	50%	52%
2024	50%	52%
2023	51%	52%
2022	53%	54%
2021	53%	54%
2020	53%	54%
2019	55%	56%
2018	55%	56%
2017	56%	58%
2016	56%	58%
2015	57%	58%

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White student share down 6 points in Washington private schools, from 56% in 2016 to 50% in 2025.

# Hawaiian Students

651 Students

20,065 Students

% Hawaiian Students

<1%

# Others Students

37,123 Students

1,473,041 Students

% of Others Students

32%

26%

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Other Races Student Percentage Trends

Year	Washington (WA) Avg	National
2025	32%	26%
2024	32%	26%
2023	31%	25%
2022	30%	25%
2021	30%	25%
2020	29%	24%
2019	29%	24%
2018	29%	23%
2017	28%	22%
2016	28%	22%
2015	27%	21%

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Other-race share up 4 points in Washington private schools, rising from 28% in 2016 to 32% in 2025.

All Ethnic Groups

Extracurriculars & Sports

Average Number of Extracurriculars

8 extracurriculars

9 extracurriculars

Average Number of Sports

6 sports

7 sports

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Frequently Asked Questions

What are the top ranked private schools in Washington?

The top-ranked private schools in Washington include Annie Wright Schools, BASIS Independent School of Bellevue, and St. Anne School.

How many private schools are located in Washington?

There are 788 private schools are located in Washington.

How much do private schools cost in Washington?

The average private school tuition in Washington is $15,248 for elementary schools and $17,441 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?

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