For many years the orientation of educational psychology has followed the basic seience approach, rather than the applied science approach. Research workers in this field intended uncritically to take psychological principles of learning that derived from laboratory on animal learning. This basic science approach has been proved irrelevant to actual school subjective-matter learning. School education refers to guided or manipulated learning that can be related to effective ways of bringing about cognitive and behavioral change that lead to specific goal with social value. The role of educational psychology, as its name implies, should be responsible to actualize the goal of the school education. Educational psychology, therefore, should change its orientation, from basic science approach to applied science approach, in order to evolve as an independent discipline. The practical way for doing this matter, this paper discussed it in detail.