Ohio Middle School Association
- Provides local and state wide information on effective strategies, professional development opportunities, student achievement, research, and contacts for your region as well as nationwide.
- http://www.ohiomsa.org/

Idaho Middle Level Association
- Provides local and state wide information on effective strategies, professional development opportunities, student achievement, research, and contacts.
- http://idahomiddlelevel.org

National Association of Elementary School Principals
- Offering member benefits, professional development opportunities, news, research, and conventions to elementary and middle school principals.
- http://www.naesp.org

National Association of Secondary School Principals
- Offering principals, assistant principals and aspiring principals member benefits, professional development opportunities, news, research, conventions and products.
- http://www.nassp.org

National Middle School Association
- Provides resources and information for professionals, parents, and others interested in the educational and developmental needs of young adolescents (youth 10-15 years of age).
- http://www.nmsa.org