We are Boulder County's premier Montessori nonprofit private school specializing in early childhood education.
Residing in Longmont, CO for over thirty years, we have set the standard for providing the highest quality Montessori experience.
Our unwavering integrity and commitment to classic Montessori principles has set us apart from other preschool/kindergarten programs.
Gateway Montessori School is licensed by the State of Colorado and is a member of the AMS, (American Montessori Society), CMA, (Colorado Montessori Association), and NAMTA, (North American Montessori Teachers Association).
We have also earned the Healthy Eating, Active Living designation from Boulder County Health Department and the Eco-Healthy Child Care designation from Children's Environmental Health Network.
Quick Stats (2025)
- School Type: Montessori School
- Grades: Nursery/Preschool-Kindergarten
- Enrollment: 65 students
- Yearly Tuition: $7,220
- Average class size: 24 students
- Application Deadline: None / Rolling
- Source: Verified school update
School Overview
School Type
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades Nursery/Preschool-Kindergarten
Learning Difference Programs
Yes
Learning Programs Supported
case by case basis
Year Founded
1982
Summer School Offered
Yes
Summer Program Details
School Calendar
Student Body
Total Students
65 students
Student Body Type
Co-ed
% Students of Color
33%
State avg.: 25%
Students by Grade

Academics and Faculty
Total Classroom Teachers
12 teachers
Student : Teacher Ratio
5:1
National avg.: 13:1
% Faculty w/Advanced Degree
25%
Average Class Size
24 students
Classroom Dress Code
Casual
no dress code
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
Yearly Tuition Cost
Application URL
Source: Verified school update
Frequently Asked Questions
How much does Gateway Montessori School cost?
Gateway Montessori School's tuition is approximately $7,220 for private students.
What schools are Gateway Montessori School often compared to?
Gateway Montessori School is often viewed alongside schools like Boulder Valley Waldorf School by visitors of our site.
Does Gateway Montessori School offer a summer program?
Yes, Gateway Montessori School offers a summer program. Visit their summer school page for more information.
When is the application deadline for Gateway Montessori School?
The application deadline for Gateway Montessori School is rolling (applications are reviewed as they are received year-round).
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