[+] Show Closed Private Schools in King County, Washington

Overview

Trends in Total Number of Private Schools

Year	King County Total Schools
2025	338
2024	340
2023	322
2022	312
2021	319
2020	329
2019	318
2018	318
2017	299
2016	308
2015	295

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# Students

56,610 Students

118,704 Students

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

Trends in the Average Number of Students Per Private School

Year	King County Average	Washington (WA) Average	National Average
2025	194	172	179
2024	194	170	172
2023	187	163	174
2022	190	157	185
2021	187	157	180
2020	179	151	171
2019	186	152	175
2018	187	150	172
2017	192	151	180
2016	186	148	178
2015	185	144	167

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% Average Students of Color

38%

32%

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

Percentage of Students of Color Trends (2015-2025)

Year	King County Average	Washington (WA) Average	National Average
2025	36%	31%	34%
2024	35%	29%	34%
2023	37%	32%	33%
2022	33%	29%	33%
2021	33%	28%	32%
2020	31%	27%	32%
2019	31%	27%	31%
2018	29%	26%	31%
2017	34%	30%	32%
2016	34%	29%	32%
2015	33%	28%	32%

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Academics and Faculty:

# Teachers

5,294 Teachers

10,043 Teachers

Average Student-Teacher Ratio

11:1

12:1

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

Student-Teacher Ratio Trends (2015-2025)

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

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% Average Faculty w/Advanced Degree

63%

59%

View Data

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

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

Year	King County Average	Washington (WA) Average	National Average
2025	62%	58%	55%
2024	61%	57%	54%
2023	62%	58%	54%
2022	60%	57%	54%
2021	61%	57%	54%
2020	60%	57%	54%
2019	59%	56%	53%
2018	58%	55%	53%
2017	58%	55%	53%
2016	55%	54%	52%
2015	55%	55%	52%

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Average Class Size

15 students

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

Class Size Trends (2015-2025)

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

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Average Number of AP Courses

11 courses

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

Trends in Average Number of AP Courses Offered

Year	King County Average	Washington (WA) Average	National Average
2025	10	10	13
2024	10	8	12
2023	10	9	11
2022	10	8	11
2021	10	8	11
2020	10	8	11
2019	10	8	11
2018	10	8	11
2017	10	8	10
2016	9	7	10
2015	9	7	10

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Average SAT score

1300

(Out of 1600)

1274

View Data

SAT Score Trends (2017-2025)

Year	King County Average	Washington (WA) Average	National Average
2025	1285	1264	1233
2024	1280	1257	1230
2023	1246	1228	1228
2022	1254	1235	1229
2021	1262	1242	1229
2020	1246	1233	1226
2019	1277	1247	1226
2018	1277	1241	1226
2017	1323	1255	1233

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Average ACT score

(Out of 36)

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ACT Score Trends (2017-2025)

Year	King County Average	Washington (WA) Average	National Average
2025	30	29	26
2024	30	28	26
2023	30	27	26
2022	30	28	26
2021	30	28	26
2020	30	28	25
2019	29	27	25
2018	29	27	25
2017	29	27	25

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Tuition and Acceptance Rate:

Average Yearly Tuition Cost

$20,551

$15,197

View Data

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

Tuition Cost Trends (2015-2025)

Year	King County Average	Washington (WA) Average	National Average
2025	$20,512	$15,533	$15,012
2024	$20,023	$15,185	$14,622
2023	$18,523	$14,169	$14,057
2022	$17,121	$13,293	$13,504
2021	$16,708	$12,994	$13,232
2020	$16,212	$12,587	$12,915
2019	$15,652	$12,231	$12,656
2018	$15,014	$11,837	$12,363
2017	$14,278	$11,270	$12,049
2016	$13,579	$10,847	$11,633
2015	$13,111	$10,475	$11,174

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Average Summer Program Cost

$1,073

$846

View Data

Summer Program Cost Trends (2018-2025)

Year	King County Average	Washington (WA) Average	National Average
2025	$1,060	$810	$1,152
2024	$1,050	$702	$1,128
2023	$2,085	$1,305	$1,156
2022	$890	$757	$1,102
2021	$882	$728	$1,125
2020	$877	$774	$1,217
2019	$932	$788	$1,305
2018	$579	$490	$1,108

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Average % on Financial Aid

26%

28%

View Data

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

Percent on Financial Aid Trends (2015-2025)

Year	King County Average	Washington (WA) Average	National Average
2025	26%	29%	34%
2024	25%	28%	34%
2023	25%	27%	34%
2022	24%	27%	33%
2021	24%	26%	33%
2020	25%	27%	32%
2019	26%	27%	31%
2018	25%	26%	30%
2017	24%	25%	30%
2016	23%	23%	29%
2015	23%	23%	28%

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Average Financial Aid Grant

$14,047

$9,186

View Data

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

Financial Aid Grant Trends (2015-2025)

Year	King County Average	Washington (WA) Average	National Average
2025	$13,988	$8,921	$7,073
2024	$13,902	$8,821	$6,930
2023	$10,667	$6,927	$6,469
2022	$9,876	$6,141	$6,289
2021	$9,418	$6,073	$6,055
2020	$8,332	$5,578	$5,921
2019	$8,373	$5,841	$5,795
2018	$7,287	$5,265	$5,456
2017	$6,912	$5,049	$5,319
2016	$7,033	$5,147	$5,105
2015	$6,748	$4,878	$5,030

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Average Acceptance Rate

79%

85%

View Data

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

Acceptance Rate Trends (2015-2025)

Year	King County Average	Washington (WA) Average	National Average
2025	77%	82%	81%
2024	79%	85%	85%
2023	77%	85%	85%
2022	77%	85%	85%
2021	78%	85%	85%
2020	78%	85%	85%
2019	77%	84%	85%
2018	76%	84%	85%
2017	77%	84%	85%
2016	73%	82%	85%
2015	73%	81%	85%

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Average Endowment Size

$11.83 million

$13.76 million

View Data

Endowment Trends (2020-2025)

Year	King County Average	Washington (WA) Average	National Average
2025	$39 M	$25 M	$39 M
2024	$9 M	$8 M	$39 M
2023	$8 M	$6 M	$39 M
2022	$10 M	$7 M	$40 M
2021	$11 M	$7 M	$40 M
2020	$11 M	$7 M	$40 M

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Students by Ethnicity:

0.67

0.64

View Data

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

Diversity Score Trends

Year	King County Average	Washington (WA) Average	National Average
2025	0.67	0.64	0.65
2024	0.67	0.64	0.65
2023	0.66	0.64	0.65
2022	0.64	0.62	0.64
2021	0.64	0.63	0.64
2020	0.65	0.63	0.64
2019	0.63	0.61	0.63
2018	0.64	0.62	0.63
2017	0.62	0.61	0.61
2016	0.62	0.60	0.61
2015	0.62	0.60	0.61

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# American Indian Students

324 Students

1,226 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	King County Average	Washington (WA) Average	National Average
2025	1%	1%	1%
2024	1%	1%	1%
2023	1%	1%	1%
2022	1%	1%	2%
2021	1%	1%	1%
2020	1%	2%	1%
2019	2%	2%	1%
2018	3%	2%	2%
2017	3%	2%	1%
2016	3%	2%	1%
2015	3%	2%	1%

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# Asian Students

6,505 Students

9,040 Students

% Asian Students

12%

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

Asian Student Percentage Trends

Year	King County Average	Washington (WA) Average	National Average
2025	12%	8%	5%
2024	11%	8%	5%
2023	11%	8%	5%
2022	10%	7%	4%
2021	10%	7%	4%
2020	10%	7%	4%
2019	8%	6%	4%
2018	8%	6%	4%
2017	7%	6%	4%
2016	8%	6%	4%
2015	8%	6%	4%

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# Hispanic Students

2,422 Students

6,302 Students

% Hispanic Students

View Data

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

Hispanic Student Percentage Trends

Year	King County Average	Washington (WA) Average	National Average
2025	4%	5%	9%
2024	4%	5%	9%
2023	4%	5%	9%
2022	4%	5%	8%
2021	4%	5%	9%
2020	4%	5%	9%
2019	3%	5%	8%
2018	3%	5%	8%
2017	3%	5%	8%
2016	3%	5%	8%
2015	3%	5%	8%

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# Black Students

2,486 Students

3,815 Students

% Black Students

View Data

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

Black Student Percentage Trends

Year	King County Average	Washington (WA) Average	National Average
2025	4%	3%	7%
2024	4%	3%	7%
2023	4%	3%	8%
2022	4%	3%	7%
2021	4%	3%	7%
2020	5%	3%	8%
2019	4%	3%	7%
2018	5%	3%	7%
2017	4%	3%	7%
2016	4%	3%	7%
2015	4%	3%	8%

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# White Students

27,095 Students

59,127 Students

% White Students

48%

50%

View Data

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

White Student Percentage Trends

Year	King County Average	Washington (WA) Average	National Average
2025	48%	50%	52%
2024	48%	50%	52%
2023	50%	51%	52%
2022	52%	53%	54%
2021	51%	53%	54%
2020	51%	53%	54%
2019	53%	55%	56%
2018	52%	55%	56%
2017	54%	56%	58%
2016	54%	56%	58%
2015	55%	57%	58%

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# Hawaiian Students

369 Students

651 Students

% Hawaiian Students

# Others Students

16,810 Students

37,096 Students

% of Others Students

30%

32%

View Data

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

Other Races Student Percentage Trends

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

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All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars

8 extracurriculars

Average Number of Sports

6 sports

Frequently Asked Questions

What are the top ranked private schools in King County, WA?

The private schools in King County, WA include BASIS Independent School of Bellevue, The Bear Creek School, and The Little School.

How many private schools are located in King County?

328 private schools are located in King County.

How much do private schools cost in King County?

The average tuition cost is $20,551, which is higher than the Washington private school average tuition cost of $15,197.

How diverse are private schools in King County?

King County private schools are approximately 38% minority students, which is higher than the Washington private school average of 32%.

What percentage of students in King County go to private school?

17% of all K-12 students in King County are educated in private schools (compared to the WA state average of 10%).

What percentage of private schools are religiously affiliated in King County?

35% of private schools in King County are religiously affiliated (most commonly Catholic and Christian).

Which private schools in King County are often viewed compared to one another?

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