K-12 School Associations in the Yahoo! Directory

Midwest Boarding Schools
Association of independent, college preparatory day and boarding schools.
www.mwbs.org
Federation of Independent Schools in Canada (FISC)
Supports, encourages, and represents the interests and concerns of member associations.
www.independentschools.ca
Association of Boarding Schools (TABS)
Boarding school information and resources as well as a directory containing information on over 250 TABS boarding schools.
www.boardingschools.com