Seattle, Washington 98115 On Google Maps →
Northwest Montessori School
- 2.5–12 yrs
- Ages
- Primary · Elementary
- Levels
- $$$ · $20k+
- Tuition
- 18.6 : 1
- Ratio
- 149 students
- Enrollment
In context
How it compares in Seattle
Northwest Montessori School is one of 26 Montessori schools in Seattle, and one of 2 with full AMS or AMI accreditation.
All Seattle schools → Best Montessori in Seattle → Cost calculator →
Facts & figures
From government filings and independent surveys — not the school's own marketing.
- Student-teacher ratio
18.6 : 1
149 students · 8 full-time-equivalent teachers
U.S. Dept. of Education private school survey, 2021–22
- School day
6.5 hours/day · 181 days/year
U.S. Dept. of Education private school survey, 2021–22
- Ownership
501(c)(3) nonprofit since 1968
$2.6M revenue (FY2023) · 24 years of IRS filings
- Classrooms
3 Primary
3 lead teachers · 8 assistants
- State license
Licensed child care center
Capacity 74 · licensed since 1992
Washington State DCYF, 2026
From the school
Programs, tuition & schedule
"Our mission is to provide an individualized learning environment, based on the principles of Dr. Maria Montessori, that is designed to help students become independent, life-long learners who are academically grounded and socially confident about their place in the world."
Programs offered
- Primary — 2 1/2 to 3 1/2 years (entry age)
- Elementary — age 6 to 7 (entry)
Source: school's Admissions page ↗
Tuition
2025-2026: First child half-day from $14,760 (Plan A) to $1,550/month (Plan D); full-day $17,370 to $1,825/month; siblings ~15% discount
Source: school's Admissions page ↗
Schedule
Half Day: 9 AM-12 PM; Full Day: 9 AM-3 PM; Elementary: 8:45 AM-3:15 PM; Dawn-to-Dusk: 7 AM-6 PM
Extended-day / aftercare available.
Admissions
How to apply
- Get to know our school (virtual meetings, open houses, classroom observations)
- Review admission materials
- Submit an application with $75 non-refundable fee
- Complete registration upon acceptance
Deadlines: Returning student re-enrollment mid-March; registration materials and first tuition payment due by August 1st; enrollment agreement within 10 days of acceptance
Source: school's Admissions page ↗
Good to know
About Northwest Montessori School
Northwest Montessori School is a Montessori school (private) in Seattle, Washington serving grades PK-6. Our mission is to provide an individualized learning environment, based on the principles of Dr. Maria Montessori, that is designed to help students become independent, life-long learners who are academically grounded and socially confident about their place in the world.
Where is Northwest Montessori School located? ⌃
7400 25th Avenue Northeast, Seattle, WA 98115
What is the phone number for Northwest Montessori School? ⌃
Northwest Montessori School can be reached at (206) 524-4244.
Is Northwest Montessori School accredited? ⌃
Northwest Montessori School lists the following accreditations or affiliations on its website: AMI (accredited).
How much is tuition at Northwest Montessori School? ⌃
Per Northwest Montessori School's own website: 2025-2026: First child half-day from $14,760 (Plan A) to $1,550/month (Plan D); full-day $17,370 to $1,825/month; siblings ~15% discount
How do you apply to Northwest Montessori School? ⌃
Northwest Montessori School's admissions process: Get to know our school (virtual meetings, open houses, classroom observations); Review admission materials; Submit an application with $75 non-refundable fee; Complete registration upon acceptance.
What are the hours at Northwest Montessori School? ⌃
Northwest Montessori School operates on these hours: Half Day: 9 AM-12 PM; Full Day: 9 AM-3 PM; Elementary: 8:45 AM-3:15 PM; Dawn-to-Dusk: 7 AM-6 PM.
What ages does Northwest Montessori School serve? ⌃
Northwest Montessori School serves grades PK-6.
What is the website for Northwest Montessori School? ⌃
The official website is northwestmontessori.org.