Associations
National Association for Single Sex Public Education [NASSPE - US]
Girls' Schools Association [GSA - UK]
National Coalition of Girls' Schools [NCGS - US]
The Alliance of Girls' Schools Australasia [AGSA]
International Boys' Schools Coalition [IBSC]
European Association Single-Sex education [EASSE - EU]
Asociación Latinoamericana de Centros de Educación Diferenciada [ALCED]
Research
Australian Council for Educational research [ACER - AU]
American Educational Research Association [AERA - US]
The Centre for Longitudinal Studies [CLS - UK]
Institut d'Estudis Superiors de la Familia [UIC - ES]
International Association fot the Evaluation of Educational Achievement [IEA]
National Center for Education Statistics [NCES - US]
National Foundation for Educational Research [NFER - UK]
Conseil Superieur de l'Éducation [CA]
Documentation
Boys Learning: Official Website of Dr. Peter West [AU]
Droit a l'Éducation et Liberté d'Enseignement [OIDEL - EU]
The Education Resources Information Center [ERIC]