American Montessori Society

American Montessori Society

Advocates and accredits Montessori education

Overview

The American Montessori Society is a non-profit that serves as the main advocate and standards-setter for Montessori education in the United States and around the world, supporting educators, administrators, schools, and policy work. It runs school accreditation, teacher credentialing, professional development, and provides resources and events such as The Montessori Event. It differentiates itself by offering accreditation, credentialing, development, and policy advocacy in one organization with a large global membership and centralized resources. Its goal is to maintain high-quality Montessori education and expand access by setting standards, accrediting schools, credentialing teachers, and supporting the field through research and policy efforts.

About American Montessori Society

Simplify's Rating
Why American Montessori Society is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Social Impact

Education

Company Size

51-200

Company Stage

N/A

Total Funding

N/A

Headquarters

New York City, New York

Founded

1960

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Simplify's Take

What believers are saying

  • AMS held The Montessori Event 2026 in Washington, D.C. with over 4,000 educators.
  • AMS expects full ICAISA membership in late 2026, strengthening accreditation credibility.
  • AMS launched regional Labposium touring fall 2026, widening its professional-development funnel.

What critics are saying

  • Program services and contributions drove 2025 revenue, exposing AMS to school attrition.
  • Revenue was $7.7 million against $7.4 million expenses, leaving thin operating slack.
  • If schools bypass AMS accreditation, dues and certification revenue erode quickly.

What makes American Montessori Society unique

  • AMS is the largest Montessori network, spanning 20,000 members and 1,300 schools.
  • Its teacher credentials and school accreditation create a pipeline from training to classrooms.
  • AMS combines Montessori advocacy with policy work through its UN-linked nonprofit platform.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

Paid Vacation

Paid Sick Leave

Paid Holidays

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