Three Tree Montessori School (2026-27 Profile)

View full size Get directions

REQUEST INFO

SAVE SCHOOL

Quick Facts (2026-27)

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

School Membership(s)School Assoc.

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

Religious Affiliation

Nonsectarian

Grades Offered

Grades Prekindergarten-6

Students By Grade

View Data

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

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full School Data: Full School Dataset XML | Full School Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Year Founded

2003

Summer School Offered

Yes

Summer Program Details

View Summer Program Details

School Calendar

View School Calendar

Student Body

Total Students

176 students

Student Body Type

Co-ed

% Students of Color

36%

State avg.: 32%

Academics & Faculty

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

Tuition & Acceptance Rate

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

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

REQUEST FREE INFORMATION

Frequently Asked Questions

How much does Three Tree Montessori School cost?

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

Does Three Tree Montessori School offer a summer program?

Yes, Three Tree Montessori School offers a summer program. Visit their summer school page for more information.

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

Endorse Three Tree Montessori School. Endorsements should be a few sentences in length. Please include any comments on:

Quality of academic programs, teachers, and facilities
Availability of music, art, sports and other extracurricular activities
Academic or athletic awards

Recent Articles

September 01, 2026

How Much Homework Is Too Much?

Learn how to compare private school homework expectations, recognize excessive workloads, evaluate assignment quality, and ask better questions about academic balance before choosing a school for your child.

September 01, 2026

Learning Support Without a Formal Program

Learn what private schools mean by informal learning support, how services differ from formal programs, and which questions families should ask before choosing the right school today.

September 01, 2026

Beyond AP vs. IB: How to Judge Academic Rigor

Learn how to judge academic rigor at private schools without AP or IB by examining curriculum depth, assessments, faculty expectations, advanced coursework, student work, and college preparation outcomes.

Request Info

Email:

Name of parent:

Student first name:

Student last name:

Student date of birth:

Student is:

Male

Female

Currently in grade:

Seeking entry for grade:

Target start date:

Please briefly describe academic, athletic, and extracurricular interests of the student:

Home address:

City:

Country:

State:

Zip: (enter "N/A" if not applicable)

Phone:

Save this data and create your user profile. Create your own user account so you don't have to re-type your user data each time you request information. You'll also be able to track your information requests, get reminded of application dates, and more!

Username:

Password:

Did You Know?

The average private school tuition in Seattle, WA is $22,298 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 69% (read more about average acceptance rates across the country).