An educational psychologist is a psychologist whose differentiating functions may include diagnostic and psycho-educational assessment, psychological counseling in educational communities (students, teachers, parents, and academic authorities), community-type psycho-educational intervention, and mediation, coordination, and referral to other professionals, at all levels of the educational system. Many countries use this term to signify those who provide services to students, their teachers, and families, while other countries use this term to signify academic expertise in teaching Educational Psychology. Source: Wikipedia (en)