Office of Overseas Schools, www.state.gov/m/a/os, lists elementary and secondary schools in countries that are sponsored by the Department of State.
International Schools Services (ISS) is a non-profit organization that operates and supports international schools. Provides listings of American and international schools, as well as services for schools, teachers and families overseas; also publishes the regularly updated The ISS Directory of Overseas Schools, a comprehensive guide to American and International schools with over 500 listings; firstname.lastname@example.org, www.iss.edu.
GoAbroad.com, www.goabroad.com, provides a commercial international education database for those intending to study abroad.
iiepassport.org, iiepassport.org, provides information for students (college, high school and other educational courses) about study abroad programs.