Hellenic group PISA (OECD) I www.iep.edu.gr/pisa

Hellenic Math "Kangaroo" Contest I www.kangaroo.gr

World Organization for Early Childhood Education - Greece I www.omep.gr

International Association for Cognitive Education & Psychology - IACEP I www.ia-cep.org

Foundation of Critical Thinking I www.criticalthinking.org

International Association for Living Values Education I www.livingvalues.net/index.html