About
Sisu Outdoor School offers outdoor learning and play for children. Its programs include Outdoor Preschool, Outdoor Explorers, and Summer Camps, with activities shaped by seasons, weather, and children themselves. Outdoor Preschool includes Monday, Wednesday, and Friday classes from 9:30am-12:30pm, or Tuesday and Thursday classes from 9:00am-12:00pm or 9:30am-12:30pm. Outdoor Explorers meets on Thursday from 1-4pm or Wednesday from 10am-2pm. Summer Camps meet Monday through Thursday each week from 9:30am-1:30pm or 10:00am-2:00pm.
Programs
- Outdoor Preschool — 3-5 yrs · Mon/Wed/Fri 9:30am-12:30pm; Tue/Thu 9:00am-12:00pm or 9:30am-12:30pm · $2,250–$2,750 per session
- Outdoor Explorers — 5-11 yr · Thu 1-4pm; Wed 10am-2pm · $1,100
- Summer Camps — 3-8 yrs · Monday-Thursday weekly; 9:30am-1:30pm or 10:00am-2:00pm · $350 · Summer camps are grouped by age and offered in weekly Monday–Thursday sessions. The page states sessions for the weeks of June 29, July 6, July 13, July 20, July 27, and August 3.
At a glance
- Ages: 3–11 years old
- Price range: $350–$2,750
- Current session: School Year 2026–2027 Fall Semester (Sep 1–Jan 29, 2027); School Year 2026–2027 Spring Semester (Feb 1–Jun 4, 2027)
- General schedule: Outdoor learning and play; days are shaped by seasons, weather, and children themselves. Summer camps meet Monday through Thursday each week. Preschool classes are offered on Mondays, Wednesdays, and Fridays or on Tuesdays and Thursdays.
About the provider
Sisu Outdoor School continues a 20-year tradition of outdoor education in the Pacific Northwest and the two-decade tradition of Tiny Treks Northwest. Its mission is rooted in the Finnish concept of sisu, described as quiet courage, resilience, and heart. The program also states that it learns and plays on the ancestral lands of the Coast Salish peoples, including the Snoqualmie, Duwamish, and Sammamish peoples.
For the 2026–2027 school year, students must be 3 years old and potty trained by September 1. Registration for the 2026–2027 school year is for the full year. The first semester is billed at registration, and the second semester will be invoiced in January 2027. No-refund policy. Weather-related closures may result in make-up days scheduled at the end of the school year. Safety-related directions are shared directly with enrolled families and scheduled visitors.
Last updated August 21, 2026.
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