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Full Time Primary
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Cornerstone Montessori School
About
Programs
Toddlers
Primary Part Time
Full Time Primary
Elementary
Admissions
Process
Tuition
Current Families
The Team
Calendars & News
Events
Contact
Book Fair
Mon, Sep 28, 2026, 6:30 AM – Fri, Oct 2, 2026, 5:30 PM
Cornerstone Montessori School
1644 Gault Street
Sumner, WA, 98390
United States