Montessori Educators International, Inc.
- Provides accredited Montessori teacher training.
- http://www.discoveret.org/mei_inc/

Modern Montessori Training Centre Singapore
- Offers the Diploma in Montessori Method of Education.
- http://www.modern-montessori.com/

North American Progressive Montessori Teacher Training Center
- Distance/correspondence Montessori Training leading to diploma. Established 1985.
- http://www.montessoritraining.net/index.htm

Kent & Sussex Montessori Centre
- Training for teachers of nursery age children. College syllabus and course details.
- http://www.montessoricentre.com/

North American Montessori Teachers' Association (NAMTA)
- Publications, conferences, networking, and information for Montessori teachers.
- http://www.montessori-namta.org/

Montessori for the Earth Distance Learning
- On-line Montessori distance learning for parents, home school, teachers, and aides by a certified Montessori teacher.
- http://www.montessorifortheearth.com

United Montessori Association
- Montessori Teacher Certification Program by correspondence. Site includes program details, pictures, contact information.
- http://www.unitedmontessori.com

Montessori St. Nicholas Centre
- London based Montessori teacher training. Distance learning by written correspondence, with workshops and practical examinations, leading to diplomas at the foundation (birth to 6 years) and advanced (6 to 12 years) levels.
- http://www.montessori.org.uk/