Burien · Licensed center
Three Tree Montessori
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- Large Montessori center, licensed for 234 children.
- Ages on the license: 12 months to 13 years.
What the state has found
The state cited rules at 2 of its 4 licensing inspections since March 2023. It lists no valid complaint about this center.
Of the 239 Seattle-area centers with 4 licensing inspections, 15% had rules cited at 2 of them, as this center did. 29% had rules cited at all 4, 7% at none.
Licensing inspections
Jun 10, 20251 citation
“Licensor observed a bottle lid that posed a choking hazard accessible to the toddlers.”
WAC 110-300-0165(2)(a)
Apr 29, 20241 citation
“Licensor observed one outlet (top socket) next to the sink in the Madrona restroom, equipped with GFCI but is not tamper-resistant.”
WAC 110-300-0165(5)(b)
Read every record and the state’s reports
State record — Washington DCYF
- Last visit
- December 4, 2025
- On file
- 4 visits since March 2023 — 2 cited nothing
- Most serious
- Serious —
Licensor observed a bottle lid that posed a choking hazard accessible to the toddlers.
· June 10, 2025
Washington DCYF publishes the licensor’s own observation and a risk level for every citation it issues at a licensing visit, with the inspection report attached as a PDF.
Jun 2025 Licensing visit 1 finding
Licensing visit · June 10, 2025
WAC 110-300-0165(2)(a) · Serious
Licensor observed a bottle lid that posed a choking hazard accessible to the toddlers.
Apr 2024 Licensing visit 1 finding
Licensing visit · April 29, 2024
WAC 110-300-0165(5)(b) · Serious
Licensor observed one outlet (top socket) next to the sink in the Madrona restroom, equipped with GFCI but is not tamper-resistant.
Shortlist replaces people’s names in the state’s text with initials. This is done by rule, not by hand, so it can miss a name or shorten a word that isn’t one. The state’s report, linked on each row, has the original.
Openings, Working Connections subsidy, ratios and staff, a typical day, and sick and biting policies aren’t on this page.
How they teach
Montessori
“The Mission of Three Tree Montessori School is to offer AMI-recognized Montessori education to the students of South King County.”
What it costs
$2,051 a month for a toddler
Lower than 76% of the 70 that publish a price.
Lower than 88% of the 99 that publish a price.
Three Tree MontessoriMost Seattle-area prices (middle 80%)
- Half day (morning)
- $1,551 to $1,654 a month
- Application fee
- $75
- Deposit
- $550, not refundable
- Siblings
- 10% sibling discount on the lowest tuition rate(s) for the 2nd and each subsequent child attending in the same school year
A day here
- Hours
- 9:00 AM to 3:15 PM, 5 days a week, school year
- Schedule
- half-day and full-day
Details
- Website
- threetree.org
- Address
- 220 SW 160 St
- License
- PL-10835, active
- Quality program
- Early Achievers Level 3
Nearby
- Millennium Kids Child Care Center LLCMedium center · under 0.1 miLast state visit Apr 28, 2025 · 1 citation
- Neighborhood House BurienMedium center · 0.7 miLast state visit Apr 29, 2026 · nothing cited
- Childrens Academy of Seattle IIIMedium center · 0.7 miLast state visit Apr 21, 2026 · 5 citations
- From Roots To WingsMedium center · 0.9 miLast state visit Sep 17, 2025 · nothing cited
- Kids Country BurienLarge center · 1.0 miLast state visit Apr 22, 2026 · 2 citations
- Creative Steps Toddler MontessoriSmall center · 1.1 miLast state visit Mar 18, 2026 · nothing cited
- Creative Minds Academy LLCSmall center · 1.3 miLast state visit Apr 28, 2025 · 2 citations
Run Three Tree Montessori? Correct or add anything here, free.
Add what is missingSources and dates
Where every fact on this page came from, and when Shortlist last checked it against that source. Anything Shortlist could not source is named here rather than left blank.
How they teach
- Approach — Checked July 2026 threetree.org
What it costs
- Toddler, Second price, Application fee, Deposit, Sibling discount — Checked September 2026 threetree.org
- Preschool — Checked July 2026 threetree.org
State record
From Washington DCYF’s published reports, last checked October 11, 2026.
A day here
- Hours, Calendar, Schedule — Checked September 2026 threetree.org
Details
- Phone, Ages on the license — Checked September 2026 findchildcarewa.org
- Website — Checked July 2026 threetree.org
- Address, License — Checked June 2026 data.wa.gov
- Quality program — Checked April 2026 data.wa.gov
Large means the biggest quarter of Seattle-area’s 859 licensed centers by state-licensed capacity: 115 to 323 children. Small is 6 to 40; medium is 41 to 114.
The ages on the license are what the state licenses it to care for, which can be wider than the ages it takes.
Nearby
The other centers’ visit lines are from Washington DCYF’s published reports as Shortlist read them on October 11, 2026.