The initial classroom teaching experience is a critical period of development during which the student teacher may begin to find himself as a teacher or become utterly discouraged. Of all the influences that may tend to affect his attitudes and growth during this period there is no influence more decisive than that exercised by the supervising teacher. The close, daily association of student teacher and supervising teacher gives the supervising teacher an unparalleled opportunity to help the prospective teacher build the attitudes that will enable him to grow strong in his chosen profession.