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School profile

Three Tree Montessori School

220 SW 160th St., Burien, United States

internationalMontessori

Tuition

$14,770 – $19,910/yr

Age range

Curriculum

Montessori

Overview

About the school

Even the youngest children can begin on their journey to independence. Our two toddler classrooms provide a peaceful, special space where young children develop skills and play a meaningful role in their own care as well as the care of the classroom environment. Every piece of furniture and all the materials are specially designed and sized to allow toddlers a maximum amount of independence. Welcome to Three Tree Montessori School, a private, nonprofit, Association Montessori Internationale–recognized school for children from 15 months to twelve years old. Guided by the teachings of Dr.

Cost

Tuition and fees

$14,770 – $19,910/yr
(~€14,770 – €19,910/yr)
Application fee
$75(~€75)
Deposit
$550(~€550)

Tuition is payable annually or in 10 equal installments (Sept 1 - June 1). Deposit is non-refundable and applied to tuition. 10% sibling discount available. School also offers optional before/after school care with separate fees. Location: Burien, WA.

Fee schedule by grade

Toddler (15 months - 3 years, Half Day)
$16,055(~€16,055)
Toddler (15 months - 3 years, Full Day)
$19,910(~€19,910)
Grade 3
$14,770(~€14,770)
Grade 4
$14,770(~€14,770)
Grade 5
$14,770(~€14,770)
Grade 6
$14,770(~€14,770)
Grade 7
$17,982(~€17,982)
Grade 8
$17,982(~€17,982)
Grade 9
$17,982(~€17,982)
Grade 10
$18,625(~€18,625)
Grade 11
$18,625(~€18,625)
Grade 12
$18,625(~€18,625)
View full fee schedule

Program

Academic profile

Grades offeredGrade 2025-2026
Age range
CurriculumMontessori
Exams offeredACT, AP

Extracurricular

DramaMusicArt

Environment

Campus and facilities

BoardingSportsScience LabsArtsMusicTheaterLibraryTechnology