For the 2026 school year, there are 8 private high schools belonging to Christian Schools International (CSI) serving 3,917 students in Washington. You can also find more schools membership associations in Washington.
The top-ranked private high schools belonging to Christian Schools International (CSI) in Washington include Sunnyside Christian School, Bellevue Christian School – Clyde Hill Campus, and Rainier Christian Middle and High School.
The average acceptance rate is 82%, which is lower than the Washington private high school average acceptance rate of 83%.
Top-Ranked Private High Schools Belonging to Christian Schools International (CSI) in Washington (2026)
School
Location
Quick Facts
1701 98th Ave Ne
Bellevue, WA 98004
(425) 460-3300
Bellevue, WA 98004
(425) 460-3300
Gr: 7-12 | 1,037 students Avg. class size: 17 students Sports: 8 Tuition & acceptance rate listed
Ellensburg Christian School
(Christian)
407 S Anderston St
Ellensburg, WA 98926
(509) 925-2411
Ellensburg, WA 98926
(509) 925-2411
Gr: NS-12 | 92 students Avg. class size: 12 students Tuition & acceptance rate listed
Lynden Christian School
(Christian)
417 Lyncs Dr
Lynden, WA 98264
(360) 354-5492
Lynden, WA 98264
(360) 354-5492
Gr: PK-12 | 1,210 students Sports: 9 | Extracurrculars: 6
Mount Vernon Christian School ![Mount Vernon Christian School Photo]( "Mount Vernon Christian School Photo")
(Christian)
820 W Blackburn Rd
Mount Vernon, WA 98273
(360) 424-9157
Mount Vernon, WA 98273
(360) 424-9157
Gr: PK-12 | 502 students Avg. class size: 21 students Sports: 6 | Extracurrculars: 6 Tuition & acceptance rate listed
Rainier Christian Middle and High School ![Rainier Christian Middle and High School Photo]( "Rainier Christian Middle and High School Photo")
(Christian)
19830 SE 328th Pl
Auburn, WA 98002
(425) 255-7273
Auburn, WA 98002
(425) 255-7273
Gr: NS-12 | 581 students Avg. class size: 15 students Sports: 9 Tuition & acceptance rate listed
2400 NE 147th Street
Seattle, WA 98155
(206) 364-7777
Seattle, WA 98155
(206) 364-7777
Gr: PK-12 | 212 students Avg. class size: 13 students Sports: 6 | Extracurrculars: 2 Tuition & acceptance rate listed
Sunnyside Christian School
(Calvinist)
1820 Sheller Road
Sunnyside, WA 98944
(509) 837-8995
Sunnyside, WA 98944
(509) 837-8995
Gr: PK-12 | 269 students Tuition & acceptance rate listed
North Whidbey Christian High School
(Christian)
675 E. Whidbey Avenue
Oak Harbor, WA 98277
(360) 675-5352
Oak Harbor, WA 98277
(360) 675-5352
Gr: 7-12 | 14 students
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