Very Good
#76 of 381 private schools in WA
Top 20% of private schools
Three Tree Montessori School
Elementary School
220 SW 160TH ST, Burien, WA 98166
Enrollment
68
Student-Teacher
9.7:1
Score
7.4
Grades
Pre-K – 6th
Enrollment
68
Student-Teacher
9.7:1
Score
7.4
Grades
Pre-K – 6th
Data vintage
2021-22
Data vintage2021-22
How this school compares
Washington private schools
#76 of 381
In Burien
#1 of 5
public schools
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Three Tree Montessori School
Elementary School in Burien · grades Pre-K – 6th. Start here, then compare fit against nearby and district options.
Highline Public Schools Virtual Academy
0.2 mi away. Use as a geographic alternative in the same move search.
Sylvester Middle School
0.2 mi away. Use as a geographic alternative in the same move search.
About Three Tree Montessori School
Three Tree Montessori School is a private elementary school in Burien, WA. Three Tree Montessori School serves approximately 68 students, and covers grades Pre-K-6th, and has a 9.7:1 student-teacher ratio. Three Tree Montessori School has a current MySchoolScout rating of 7.4 out of 10 and ranks #76 of 381 private schools in WA.
- This school 7.4 · Very Good
- WA avg 6.8
What Parents Should Know
At 68 students, Three Tree Montessori School is on the smaller side. That usually buys more individual attention and teachers who know every kid by name, with the trade-off of fewer electives and extracurriculars than a larger school can staff. Ask what activities it actually offers.
At 9.7:1 students to teachers, Three Tree Montessori School sits well below the national average. Smaller classes like that usually mean more one-on-one time between students and teachers.
Three Tree Montessori School is private, so it runs independently of the local district and sets its own curriculum. That freedom cuts both ways depending on what you want for your child. If you're considering it, start with the practical questions: tuition, financial aid, and how admissions work.
Compare to Public Schools
BetaHow Three Tree Montessori School compares to 9 public schools serving similar grades in Burien, WA
Student Demographics
Nearby Elementary Schools
| School | Rating |
|---|---|
| Three Tree Montessori School (this school) | 7.4 |
| Highline Public Schools Virtual Academy | 4.8 |
| Sylvester Middle School | 5.1 |
| Gregory Heights Elementary | 7.9 |
| Seahurst Elementary School | 4.5 |
| Big Picture School | 7.2 |
| Highline Home School Center | — |
| Cedarhurst Elementary | 3.5 |
| Hazel Valley Elementary | 4.0 |
| Shorewood Elementary | 7.6 |
Demographics sourced from NCES Private School Survey (PSS) and Common Core of Data (CCD). Comparisons are based on enrollment-weighted averages.
Score Breakdown
PreliminaryWhat This Rating Measures
This rating reflects classroom size, instructional time, student diversity, community resources, and school characteristics. Private schools are ranked against other private schools in WA.
Data Unavailable
View data sources
Score basis: Private school model
Data coverage: 80% of scoring components had data
Components scored: 4 of 5
Ranking pool: Private schools in WA
Test Scores
Test score data not yet available for this school.
Student Demographics NCES PSS (SY 2021-22)
Source: NCES Private School Survey (PSS)
Location
220 SW 160TH ST, Burien, WA 98166
Nearby Alternatives
Families considering Three Tree Montessori School may also want to explore other elementary schools in the area. North Hill Elementary (rated 8.4/10, 2.5 miles away, in nearby Des Moines), which scores slightly higher. Another option is Gregory Heights Elementary (rated 7.9/10, 0.9 miles away), which scores slightly higher. Additionally, Marvista Elementary (rated 6.6/10, 2.4 miles away, in nearby Normandy Park), with a comparable rating. For more schools in Burien, see our Burien schools guide .
Nearby Schools
20 within 2.1 mi| School | Distance | Rating |
|---|---|---|
| Highline Public Schools Virtual Academy Burien | 0.2 mi | 4.8 |
| Sylvester Middle School Burien | 0.2 mi | 5.1 |
| Highline High School Burien | 0.5 mi | 3.3 |
| JOHN F KENNEDY CATHOLIC HIGH SCHOOL Burien | 1.3 mi | 6.6 |
| Gregory Heights Elementary Burien | 0.9 mi | 7.9 |
| Seahurst Elementary School Burien | 1.1 mi | 4.5 |
| GLENDALE LUTHERAN SCHOOL Burien | 1.5 mi | 6.1 |
| ST FRANCIS OF ASSISI SCHOOL Burien | 1.2 mi | 6.3 |
| Big Picture School Burien | 1.7 mi | 7.2 |
| CHOICE Academy Seattle | 1.7 mi | 7.4 |
| Highline Home School Center Burien | 1.7 mi | — |
| Hazel Valley Elementary Burien | 1.8 mi | 4.0 |
| Cedarhurst Elementary Burien | 1.8 mi | 3.5 |
| ST BERNADETTE SCHOOL Burien | 2.1 mi | 6.2 |
| Marvista Elementary Normandy Park | 2.4 mi | 6.6 |
| Highline Open Doors 1418 Burien | 2.5 mi | 3.8 |
| North Hill Elementary Des Moines | 2.5 mi | 8.4 |
| Maritime High School Des Moines | 2.7 mi | 7.4 |
| Evergreen High School Seattle | 2.8 mi | 5.3 |
| Glacier Middle School Seatac | 2.1 mi | 3.3 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 98166 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$112,191
Median Home Value
$785,700
Median Rent
$1,739/mo
Population
22,001
College Educated
45.5%
Homeownership
66.6%
Avg Commute
26.8 min
Poverty Rate
8.7%
Median Age
43.7
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Damman Elementary Ellensburg, WA | 7.4 |
| THE GARDNER SCHOOL OF ARTS & SCIENCES Vancouver, WA | 7.4 |
| THE SEABURY SCHOOL Tacoma, WA | 7.4 |
| CHRYSALIS ELEMENTARY SCHOOL Woodinville, WA | 7.5 |
| NORTHERN LIGHTS MONTESSORI Redmond, WA | 7.5 |
| Ignite Family Academy Lacey, WA | 7.3 |
Frequently Asked Questions
Common questions about Three Tree Montessori School
What grades does Three Tree Montessori School serve?
Three Tree Montessori School serves students in grades Pre-K through 6th.
How many students attend Three Tree Montessori School?
Three Tree Montessori School has an enrollment of approximately 68 students.
What is the student-teacher ratio at Three Tree Montessori School?
The student-teacher ratio at Three Tree Montessori School is 9.7:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.
How does Three Tree Montessori School rank in WA?
Three Tree Montessori School ranks #76 of 381 private schools in WA.
What is Three Tree Montessori School's MySchoolScout rating?
Three Tree Montessori School has a current MySchoolScout rating of 7.4 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
Is Three Tree Montessori School a private school?
Yes, Three Tree Montessori School is a private coeducational school with a Nonsectarian affiliation. Private schools are not required to participate in state standardized testing, so academic performance data may be limited compared to public schools.
Is Three Tree Montessori School a religious school?
No, Three Tree Montessori School is a nonsectarian (non-religious) private school.
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Neighborhood Context
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Quick Facts NCES PSS (SY 2021-22)
- Grades
- Pre-K – 6th
- Enrollment
- 68
- Gender Split
- 50% M / 50% F
- Student-Teacher Ratio
- 9.7:1
- Teachers (FTE)
- 7
- Type
- private
- Coed Status
- coed
- Affiliation
- Nonsectarian
- School Day
- 7 hours
- Days Per Year
- 180 days
- Setting
- Large Suburb
- County
- King County
- Phone
- (206) 242-5100
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