A Study of Certain Bases for Selecting Content of Professional Courses in Physical Education The scientific selection of materials to be included in professional courses in physical education is a problem that is confronting the many teacher-training institutions today. Obviously, there are many bases that may be used in selecting the content of these courses. It was the purpose of this study to investigate two of these bases, namely: the time spent by teachers in the field in performance of administrative and teaching duties; and the subjective opinion of these same teachers: as to the importance of professional training in the duties involved, These two bases would appear to be most worthy of consideration as aids in the matter of sclecting the content of the professional courses in physical education. Training should be directly related to the duties the teacher-to-be will be called upon to perform when he gets out into the field. Furthermore, no one would appear to be in a better position than the teachers in the field to judee as to the relative importance of professional training in the activities he is called upon daily to perform, The question as to their worth as bases for evalu- ating the content of the professional oourese has never been really established however, and as stated above it was the purpose of this investigation to study them through scien- tific procedure.