Mr. Remmers, as Head of the Division of Educational Reference at Purdue Uni versity, Lafayette, Indiana, was invited to prepare the section for this issue. Mr. Baker, one of his collaborators, has as sisted. This research division has long been known for studies of teaching and of the evaluation of teaching. Mr. Rem mers is currently the Chairman of the American Educational Research Associa tion Committee on the Criteria of Teach er Effectiveness.—Douglas E. Scates.