Sammamish, WA Private School Trends (10-Year)

Private Schools

+66.7% (+4 schools) 10-yr

2,495

Students

+363.8% (+1,957 students) 8-yr

$14,110

Avg. Tuition

Avg. Class Size

-5.0% (-1 student) 8-yr

38%

Students of Color

+58.3% (+14.0 pp) 7-yr

12:1

Student-Teacher Ratio

-7.7% (-1.0) 8-yr

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Enrollment & Diversity

Trends in Total Number of Private Schools

Year	Sammamish, WA Total Schools
2025	10
2024	10
2023	9
2022	8
2021	8
2020	8
2019	8
2018	7
2017	7
2016	6
2015	6

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Private schools up 4 in Sammamish, rising from 6 in 2016 to 10 in 2025.

# Students

2,495 Students

118,587 Students

View Data

Trends in the Average Number of Students Per Private School

Year	Sammamish, WA Avg	Washington (WA)	National
2025	278	172	179
2024	278	170	172
2023	312	163	174
2022	231	157	185
2021	231	157	180
2020	239	151	171
2019	198	152	175
2018	228	150	172
2017	108	151	180

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School size up 170 students in Sammamish, average private-school enrollment rose from 108 in 2017 to 278 in 2025.

% Students of Color

38%

32%

View Data

Percentage of Students of Color Trends (2018-2025)

Year	Sammamish, WA Avg	Washington (WA)	National
2025	27%	31%	34%
2024	27%	29%	34%
2023	33%	32%	33%
2022	31%	29%	33%
2021	31%	28%	32%
2020	23%	27%	32%
2019	35%	27%	31%
2018	24%	26%	31%

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0.59

0.64

View Data

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

Diversity Score Trends

Year	Sammamish, WA Avg	Washington (WA)	National
2025	0.59	0.64	0.65
2024	0.59	0.64	0.65
2023	0.59	0.64	0.65
2022	0.59	0.62	0.64
2021	0.59	0.63	0.64
2020	0.59	0.63	0.64
2019	0.52	0.61	0.63
2018	0.52	0.62	0.63
2017	0.56	0.61	0.61
2016	0.56	0.60	0.61
2015	0.55	0.60	0.61

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Show more data/charts: racial breakdown

# American Indian Students

10 Students

1,226 Students

% American Indian Students

<1%

View Data

Percentage of Private School Students of American Indian Trends

Year	Sammamish, WA Avg	Washington (WA)	National
2019	2%	2%	1%
2018	2%	2%	2%
2017	2%	2%	1%
2016	2%	2%	1%
2015	2%	2%	1%

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# Asian Students

181 Students

9,040 Students

% Asian Students

View Data

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

Asian Student Percentage Trends

Year	Sammamish, WA Avg	Washington (WA)	National
2025	8%	8%	5%
2024	8%	8%	5%
2023	7%	8%	5%
2022	6%	7%	4%
2021	6%	7%	4%
2020	6%	7%	4%
2019	5%	6%	4%
2018	5%	6%	4%
2017	3%	6%	4%
2016	4%	6%	4%
2015	4%	6%	4%

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# Hispanic Students

90 Students

6,302 Students

% Hispanic Students

View Data

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

Hispanic Student Percentage Trends

Year	Sammamish, WA Avg	Washington (WA)	National
2025	4%	5%	9%
2024	4%	5%	9%
2023	4%	5%	9%
2022	3%	5%	8%
2021	3%	5%	9%
2020	3%	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

65 Students

3,815 Students

% Black Students

View Data

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

Black Student Percentage Trends

Year	Sammamish, WA Avg	Washington (WA)	National
2025	3%	3%	7%
2024	3%	3%	7%
2023	3%	3%	8%
2022	1%	3%	7%
2021	1%	3%	7%
2020	1%	3%	8%
2019	1%	3%	7%
2018	1%	3%	7%
2017	1%	3%	7%
2016	1%	3%	7%
2015	1%	3%	8%

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# White Students

1,410 Students

59,127 Students

% White Students

56%

50%

View Data

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

White Student Percentage Trends

Year	Sammamish, WA Avg	Washington (WA)	National
2025	56%	50%	52%
2024	56%	50%	52%
2023	57%	51%	52%
2022	52%	53%	54%
2021	52%	53%	54%
2020	50%	53%	54%
2019	65%	55%	56%
2018	65%	55%	56%
2017	58%	56%	58%
2016	58%	56%	58%
2015	61%	57%	58%

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# Hawaiian Students

11 Students

651 Students

% Hawaiian Students

# Others Students

732 Students

37,123 Students

% of Others Students

29%

32%

View Data

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

Other Races Student Percentage Trends

Year	Sammamish, WA Avg	Washington (WA)	National
2025	29%	32%	26%
2024	29%	32%	26%
2023	29%	31%	25%
2022	37%	30%	25%
2021	37%	30%	25%
2020	39%	29%	24%
2019	23%	29%	24%
2018	23%	29%	23%
2017	33%	28%	22%
2016	32%	28%	22%
2015	29%	27%	21%

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All Ethnic Groups

Academics

# Teachers

201 Teachers

9,998 Teachers

Average Student-Teacher Ratio

12:1

View Data

Student-Teacher Ratio Trends (2017-2025)

Year	Sammamish, WA Avg	Washington (WA)	National
2025	12:1	12:1	11:1
2024	11:1	12:1	11:1
2023	10:1	12:1	11:1
2022	10:1	12:1	11:1
2021	10:1	12:1	11:1
2020	10:1	12:1	12:1
2019	11:1	12:1	12:1
2018	12:1	12:1	12:1
2017	13:1	12:1	12:1

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% Average Faculty w/Advanced Degree

57%

59%

Average Class Size

19 students

15 students

View Data

Class Size Trends (2017-2025)

Year	Sammamish, WA Avg	Washington (WA)	National
2025	20	16	15
2024	20	16	15
2023	20	16	15
2022	20	15	15
2021	20	15	15
2020	20	15	15
2019	20	15	15
2018	20	15	15
2017	20	15	15

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Average Number of AP Courses

24 courses

11 courses

Average SAT score

1225

(Out of 1600)

1274

Tuition & Aid

Average Yearly Tuition Cost

$14,110

$15,225

Average Summer Program Cost

$450

$856

Average % on Financial Aid

37%

28%

Average Financial Aid Grant

$18,135

$9,416

Admissions & Athletics

Average Acceptance Rate

99%

85%

Average Number of Extracurriculars

19 extracurriculars

8 extracurriculars

Average Number of Sports

8 sports

6 sports

Frequently Asked Questions

What are the top ranked private schools in Sammamish, WA?

The private schools in Sammamish, WA include Eastside Catholic School and Eastside Catholic High School.

How many private schools are located in Sammamish?

10 private schools are located in Sammamish.

How diverse are private schools in Sammamish?

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

What percentage of students in Sammamish go to private school?

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

What percentage of private schools are religiously affiliated in Sammamish?

30% of private schools in Sammamish are religiously affiliated (most commonly Catholic and Other).

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

Popular comparisons of private schools in Sammamish include: Sammamish KinderCare vs. Sammamish Childrens School, Aster Montessori vs. Arbor Schools, Sammamish Childrens School vs. Sammamish KinderCare

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