For the 2026 school year, there are 3 private high schools serving 334 students in Mercer Island, WA.
The top-ranked private high schools in Mercer Island, WA include St. Monica Catholic School and Northwest Yeshiva High School.
The average acceptance rate is 98%, which is higher than the Washington private high school average acceptance rate of 83%.
Top-Ranked Mercer Island 草榴社区 High Schools (2026)
School
Location
Quick Facts
5017 90th Avenue SE
Mercer Island, WA 98040
(206) 232-5272
Mercer Island, WA 98040
(206) 232-5272
Gr: 9-12 | 65 students Avg. class size: 12 students Sports: 5 | Extracurrculars: 11 Tuition listed
4320 87th Avenue SE
Mercer Island, WA 98040
(206) 232-5432
Mercer Island, WA 98040
(206) 232-5432
Gr: NS-12 | 262 students Avg. class size: 21 students Sports: 4 | Extracurrculars: 17 Tuition & acceptance rate listed
9311 SE 36th St
Mercer Island, WA 98040
(206) 232-0059
Mercer Island, WA 98040
(206) 232-0059
Gr: 9-12 | 7 students Tuition listed
Mercer Island, Washington 草榴社区 Schools (Closed)
School
Location
Quick Facts
American Academy (Closed 2015)
(Christian)
7834 Se 32nd St
Mercer Island, WA 98040
(206) 230-5672
Mercer Island, WA 98040
(206) 230-5672
Gr: 1-12 | 25 students
Overview
This Town (Mercer Island)
This State (WA)
# Schools
3 Schools
Student Body:
# Students
334 Students
55,331 Students
% Average Students of Color
14%
29%
Academics and Faculty:
# Teachers
50 Teachers
4,869 Teachers
Average Student-Teacher Ratio
7:1
11:1
% Average Faculty w/Advanced Degree
90%
63%
Average Class Size
17 students
14 students
Average Number of AP Courses
6 courses
10 courses
Average SAT score
1380
(Out of 1600)
1264
Average ACT score
29
(Out of 36)
29
Tuition and Acceptance Rate:
Average Yearly Tuition Cost
$24,288
$17,416
Average % on Financial Aid
60%
33%
Average Financial Aid Grant
$15,900
$9,142
Average Acceptance Rate
98%
83%
Average Endowment Size
$2 million
$49.63 million
Students by Ethnicity:
Diversity Score
0.21
0.61
# American Indian Students
2 Students
621 Students
% American Indian Students
n/a
1%
# Asian Students
10 Students
4,170 Students
% Asian Students
3%
8%
# Hispanic Students
n/a
2,314 Students
% Hispanic Students
n/a
4%
# Black Students
3 Students
1,553 Students
% Black Students
1%
3%
# White Students
334 Students
30,343 Students
% White Students
89%
56%
# Hawaiian Students
n/a
237 Students
% Hawaiian Students
n/a
n/a
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
28 Students
15,168 Students
% of Others Students
7%
28%
All Ethnic Groups
Extracurriculars and Sports:
Average Number of Extracurriculars
14 extracurriculars
11 extracurriculars
Average Number of Sports
5 sports
7 sports
Frequently Asked Questions
What are the top-ranked private high schools in Mercer Island, WA?
The top-ranked private high schools in Mercer Island, WA include St. Monica Catholic School and Northwest Yeshiva High School.
How many private high schools are located in Mercer Island?
3 private high schools are located in Mercer Island.
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