The school media center should be considered as the center of the curriculum wheel with librarians working together with teachers to assist in providing appropriate instructional materials. Media to be utilized in teaching-learning situations must follow accepted criteria from the psychology of learning, but school librarians have an important role in guiding and assisting teachers to select media which secure the interests of students, emphasize meaning in learning, stress purposeful experiences, provide for individual differences, and achieve balance among objectives. The school librarian also needs to be well versed in diverse philosophies of teaching to assist teachers in guiding optimal student progress. These include subject centered methods, measurably stated objectives approaches, decision-making strategies, and problem solving procedures. These philosophies may be utilized as the need arises, but should provide for individual learning styles of students. (10 references) (EW)