To reach a faculty or staff person by phone, please call the main office at (206) 567-5955 during our hours of operation (8AM – 4PM). If you do not reach us in person, please leave us a detailed message on our voicemail and we will return your call as soon as possible. We can also be reached by email at:

Harbor School has two campuses on Vashon Island. Our main campus includes the administrative offices and serves our students in grades 4-8. Our Carpe Diem classrooms are located just a mile south of our main campus and serve our students in grades K-3.

Harbor School Main Campus 
15920 Vashon Hwy SW
Vashon, WA 98070

Carpe Diem Campus – Grades K-3
17708 Vashon Hwy SW
Vashon, WA 98070

Please note our mailing address is different than our physical address. To send something by post, please mail to: PO Box 1912, Vashon, WA 98070