- Anglo-American School of Moscow (Moscow, Russia)
- Bali international School (Bali, Indonesia)
- Beijing City International School (Beijing, China)
- Carol Morgan School (Santo Domingo, Dominican Republic)
- Cheongna Dalton School (Incheon, South Korea)
- EdLeader21 (Tucson, Arizona, USA)
- Havergal College (Toronto, Canada)
- School District of Greenfield (Wisconsin, USA)
- International School of Bangkok (Bangkok, Thailand)
- International School of Beijing (Beijing, China)
- International Schools Campus – Hamburg (Hamburg, Germany)
- International School of Dusseldorf (Dusseldorf, Germany)
- International School of Kenya (Nairobi, Kenya)
- International School of Yangon (Yangon, Myanmar)
- Lyford Cay International School (Bahamas)
- Mackay Christian College (Mackay, Australia)
- Morton Bay College (Brisbane, Australia)
- New England Association of Schools and Colleges (Burlington, MA, USA)
- Parafield Gardens High School (Adelaide, Australia)
- Pickering College (Newmarket, Canada)
- Singapore American School (Singapore)
- United World College South-East Asia (Singapore)
- Wesley College (Perth, Australia)
- Woodland Star International School (Nairobi, Kenya)
- Zurich International School (Zurich, Switzerland)
- Central and Eastern European Schools Association (CEESA)
- East Asia Regional Council of Schools (EARCOS)
- EdLeader21
- European Council of International Schools (ECIS)
- Philippine Department of Education – Fund for Assistance to Private Education (FAPE)
- Near East South Asia Council of International Schools (NESA)
- New England Association of Schools and Colleges (NEASC)