This fact sheet, written in both English and Spanish, provides a definition, information on incidence, typical characteristics, and educational implications of emotional disturbance. The definition is from the Individuals with Disabilities Education Act (IDEA) and incidence in 1999-2000 is reported as about 470,000 children and youth. Educational implications include providing emotional and behavioral support, positive behavioral support methodology, and the Individualized Education Program (IEP). The important role of parent support groups is also noted. The fact sheet also lists five print and six organizational resources for further information. (DB)