Isthmus Montessori Academy in Madison, WI serves co–ed students from kindergarten through 9th grade in a nonsectarian Montessori program.
The school enrolled 46 students in 2024 with a student–teacher ratio of 12:1 supported by 4 teachers.
Founded in 2012, the academy operates in a large city community and is a member of the Association Montessori International (AMI).
Twenty percent of the student body represents students of color, reflecting some diversity within the school population.
Isthmus Montessori Academy offers an alternative Montessori curriculum option for families seeking private schools in Madison.
Quick Facts (2026)
- School Type: Montessori School
- Grades: Kindergarten-9
- Enrollment: 46 students
- Application Deadline: None / Rolling
- Source: National Center for Education Statistics (NCES)
School Overview
School Type
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades Kindergarten-9
Year Founded
2012
School Calendar
Student Body
Total Students
46 students
Student Body Type
Co-ed
% Students of Color
20%
State avg.: 35%
Students by Grade
Academics and Faculty
Total Classroom Teachers
4 teachers
Student-Teacher Ratio
12:1
National avg.: 11:1
Tuition and Acceptance Rate
Source: National Center for Education Statistics (NCES)
Frequently Asked Questions
When is the application deadline for Isthmus Montessori Academy?
The application deadline for Isthmus Montessori Academy is rolling (applications are reviewed as they are received year-round).
School Reviews
Endorse Isthmus Montessori Academy. Endorsements should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
- Academic or athletic awards
Recent Articles
Private School Fees Increase Mid-Year: A Parent Action Plan
A 2026 parent action plan for managing mid-year private school tuition increases, including contracts, negotiation tips, and financial options.
Private School Scholarship Scams & Red Flags to Watch Out For (2026 Guide)
Learn how to spot private school scholarship scams in 2026, including red flags, real examples, and expert tips to protect families.
Diversity in Private Schools: Progress and Obstacles in 2026
Explore how private schools are advancing diversity in 2026, key gains made, ongoing challenges, and what families should know.


