Private School Review - Established 2003

Ross Academy Montessori School

7 Thomas Dr Mill Valley, CA 94941
Tel: (415) 383-5777
www.rossacademymontessori.com

Quick Facts (2026-27)

  • School Type: Montessori School
  • Grades: Prekindergarten-Kindergarten
  • Enrollment: 77 students
  • Yearly Tuition: $15,000
  • Average class size: 12 students
  • Application Deadline: None / Rolling
  • Source: National Center for Education Statistics (NCES)
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About the School

  • Ross Academy Montessori School serves 77 students in grades Prekindergarten-Kindergarten, is a member of the American Montessori Society (AMS) and the Other special emphasis association(s).
  • The student:teacher of Ross Academy Montessori School is 6:1.

Quick Facts (2026-27)

  • School Type: Montessori School
  • Grades: Prekindergarten-Kindergarten
  • Enrollment: 77 students
  • Yearly Tuition: $15,000
  • Average class size: 12 students
  • Application Deadline: None / Rolling
  • Source: National Center for Education Statistics (NCES)

School Facts

School Type
Montessori School
Grades Offered
Grades Prekindergarten-Kindergarten
Students By Grade

Distribution of Students By Grade

GradeRoss Academy Montessori School
Pre-K75
Kind2
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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
1971
School Motto
The freedom to achieve!

Student Body

Total Students
77 students
Student Body Type
Co-ed

Academic Profile

Total Classroom Teachers
13 teachers
Student-Teacher Ratio
6:1
National avg.: 11:1
Average Class Size
12 students
School Membership(s)School Assoc.
American Montessori Society (AMS)
Other special emphasis association(s)

Tuition & Financial Aid

Admission Deadline
None / Rolling
Yearly Tuition Cost
$15,000
View national tuition avg.
Application URL
Online Application
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Frequently Asked Questions

How much does Ross Academy Montessori School cost?
Ross Academy Montessori School's tuition is approximately $15,000 for private students.
What schools are Ross Academy Montessori School often compared to?
Ross Academy Montessori School is often viewed alongside schools like Guidepost Montessori at Mill Valley by visitors of our site.
When is the application deadline for Ross Academy Montessori School?
The application deadline for Ross Academy Montessori School is rolling (applications are reviewed as they are received year-round).

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Did You Know?

The average private school tuition in Marin County, CA is $27,917 for elementary schools and $34,712 for high schools (read more about average private school tuition across the country).
The average acceptance rate in Marin County, CA is 79% (read more about average acceptance rates across the country).

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