There are a number of national and international Montessori organizations with varying membership, interests, and roles. This page links to more detailed descriptions of each organization.
The Association Montessori Internationale is the original international organization founded in 1929 by Maria Montessori, which continues to train teachers and promote and publish her work. AMI has affiliates and training programs in countries around the world and undertakes additional projects in the service of children as well:
North American Affiliates:
Association Montessori Internationale-USA (AMI-USA) • website
Elementary Alumni Association (AMI-EAA) • website
North American Montessori Teachers Association (NAMTA) • website
Montessori Administrators Association (MAA) • website
International Affiliates (on the AMI website)
Other Montessori Organizations
National Center for Montessori in the Public Sector (NCMPS) • website • NCMPS was founded by AMS in 2012 and is now an independent organization supporting public Montessori programs with assessment and evaluation tools, direct school support, training support, and more.
The Montessori Foundation (from the website): “The Montessori Foundation is a nonprofit organization dedicated to the advancement of Montessori education in the United States and abroad.” It sponsors a number of activities, including the periodical Tomorrow’s Child, a help line, a resource library, and a membership organization, the International Montessori Council (IMC).
The Montessori Madmen is an informal collection of Montessori advocates who pool their talents and energies and to offer a range of Montessori advocacy tools, such as books, videos, online presentations, billboards, communication strategies, and more.
The Montessori Institute for Professional Studies (MTIPS) offers professional development for Montessori teachers at all levels.
The Montessori Accreditation Council for Teacher Education (MACTE) is U.S. Department of education accreditation body for Montessori teacher training programs.
Montessori Educational Programs International (MEPI) offers teacher training and school accreditation.