| Name |
County |
| Hamlin Robinson School |
King County |
| Harbor Christian Schools |
Pierce County |
| Harbour Pointe Montessori School |
Snohomish County |
| Harmony Elementary School |
Whatcom County |
| Harrington Elementary School |
Lincoln County |
| HEART High School |
Thurston County |
| Heritage Christian Academy |
King County |
| Heritage Christian School |
Pierce County |
| Heritage School |
Snohomish County |
| Highline Choice Academy |
King County |
| Hillside Student Community School |
King County |
| Hilltop School |
Pacific County |
| Holden Village School |
Chelan County |
| Holy Family Catholic School |
King County |
| Holy Family School |
Asotin County |
| Holy Family School |
Thurston County |
| Holy Innocents School of the Northwest |
King County |
| Holy Trinity Lutheran School |
King County |
| Home Based School |
Pierce County |
| Home Choice Academy |
Clark County |
| Home Education Exchange |
King County |
| Home Link Alternative |
Stevens County |
| Home Program School |
King County |
| Home School Academy |
Spokane County |
| HomeConnection |
Island County |
| Homelink |
Mason County |
| Homelink School |
Snohomish County |
| Homeworks |
Spokane County |
| Honey Dew Elementary School |
King County |
| Hood Canal Elementary - Junior High School |
Mason County |
| Hopkins Preschool Center |
Grays Harbor County |
| Horizon School |
King County |
| Hosanna Christian School |
Clark County |
| Hosanna Christian School |
Pierce County |
| Hutch School |
King County |
| Independent Scholar |
Spokane County |
| International Community School |
King County |
| International School |
King County |
| Internet Academy |
King County |
| Irene Reither Primary School |
Whatcom County |
| Island Christian Academy |
Island County |
| Issaquah Montessori School |
King County |
| Issaquah Special Services |
King County |
| Jefferson Community School |
Jefferson County |
| Jenkins Junior / Senior High School |
Stevens County |
| JHOP Program School |
Kitsap County |
| Johnson Christian School |
Stevens County |
| Journey Christian School - Kelso Longview Adventist School |
Cowlitz County |
| Julius A Wendt Elementary / John C Thomas Middle School |
Wahkiakum County |
| Junior Junction Day School |
King County |
| Juvenile Detention Center Education Program |
Island County |
| K - 12 Ellensburg Learning Center |
Kittitas County |
| Kalama Junior Senior High School |
Cowlitz County |
| Kendall Elementary School |
Whatcom County |
| Kennydale Elementary School |
King County |
| Kent Mountain View Academy |
King County |
| Kent Phoenix Academy |
King County |
| Kentwood Christian Academy |
King County |
| Kettle Falls Homelink |
Stevens County |
| Kiddieland Children's Center |
Thurston County |
| KinderCare 1336 |
Pierce County |
| KinderCare 851 |
Pierce County |
| Kindercare 921 |
Kitsap County |
| KinderCare 960 |
Snohomish County |
| KinderCare Learning Center |
Pierce County |
| KinderCare Learning Center 1162 |
King County |
| King County Detention Center School |
King County |
| King of Kings Lutheran Preschool and Kindergarten |
King County |
| King's Schools |
King County |
| Kings Way Christian School |
Clark County |
| Kingspoint Christian School |
Franklin County |
| Kitsap Adventist Christian School |
Kitsap County |
| Kitsap Detention School |
Kitsap County |
| Klahowya Secondary School |
Kitsap County |
| Klickitat Schools |
Klickitat County |
