Three Tree Montessori School (2026-27 Profile)

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Quick Facts (26-27)

School Type: Montessori School
Grades: Prekindergarten-6
Enrollment: 176 students
Yearly Tuition: $16,055
Average class size: 22 students
Application Deadline: None / Rolling
Source: ✓Verified school update

School Facts

School Type

Montessori School

Religious Affiliation

Nonsectarian

Grades Offered

Grades Prekindergarten-6

Students By Grade

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Distribution of Students By Grade
Grade	Three Tree Montessori School
Pre-K	106
Kind	18
1	17
2	8
3	6
4	9
5	5
6	7

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Year Founded

2003

Summer School Offered

Yes

School Calendar

View School Calendar

Student Body

Total Students

176 students

Student Body Type

Co-ed

% Students of Color

36%

State avg.: 32%

Academic Profile

Total Classroom Teachers

7 teachers

Student-Teacher Ratio

25:1

National avg.: 11:1

% Faculty w/Advanced Degree

44%

Average Class Size

22 students

Classroom Dress Code

Casual

School Membership(s)School Assoc.

Association Montessori Internationale (AMI)
Northwest Association of Independent Schools (NWAIS)

Tuition & Financial Aid

Admission Deadline

None / Rolling

Yearly Tuition Cost

$16,055

View national tuition avg.

Tuition Notes

Please refer to website for current tuition & fee schedule.

Summer Program Cost Notes

Please refer to website for current summer program costs.

% on Financial Aid

10%

Admissions Director

Sawyer Pouliot

Application URL

Online Application

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Extracurriculars

Total ExtracurricularsTotal Extra-curric.

1 extracurricular

ExtracurricularsExtra-curric.

Recreational Athletic Programs:

Teeny Tumblers

School Notes

Three Tree Montessori School provides Montessori learning environments in which children are encouraged to explore, learn and interact in a diverse community that fosters independence, critical thinking and learning for life.

Three Tree Montessori School's programs include:
- Toddler communities for ages 15 months - 3 years
- Primary communities for ages 2.5 - 6 years
- Lower Elementary community for ages 6 -9 years
- Upper Elementary community 9 - 12 years
- AM/PM Care for families needing extra hours
- Summer Program (for currently-enrolled students in the academic year & alumni)
Family members are involved in the community through parent workshops, community social events, special events related to classroom and all-school celebrations, and participation in committee and task force work.

Source: Verified school update

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Frequently Asked Questions

How much does Three Tree Montessori School cost?

Three Tree Montessori School's tuition is approximately $16,055 for private students.

When is the application deadline for Three Tree Montessori School?

The application deadline for Three Tree Montessori School is rolling (applications are reviewed as they are received year-round).

School Reviews

5 5/17/2016

Switched from a more "well known" private school in Seattle. Couldn't be happier. Kids are taught to love learning and be self reliant in an environment with much better diversity and a much higher level of respect for the children as people. Some of the most committed teachers I''ve ever met. Love this school

- Posted by Parent - Jasje

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Did You Know?

The average private school tuition in Seattle, WA is $22,183 for elementary schools and $24,673 for high schools (read more about average private school tuition across the country).

The average acceptance rate in Seattle, WA is 73% (read more about average acceptance rates across the country).