There has never been enough research into the subject of masculinity femininity by psychologists. The opinion has been commonly held that such individual differences are not very basic so far as the structure of person ality is concerned. For several reasons, the subject of masculinity-femininity remains poorly investigated, and standardized measuring instruments for the M-F1 variable have evolved somewhat haphazardly. It would seem that such far reaching biological differences as the sexual ones must necessarily be reflected in the personality. Recent investigations into the subject are of several varieties. Some touch the field of abilities and voca tional interests, (11) far example. More common is the attempt to delineate the respective personalities of the two sexes largely through standardized tests (5). There are also studies which attempt to describe the masculine and the feminine behavior patterns on the basis of clinical evidence, experi mental evidence, or perhaps incidental standardized testing; among these are (8) and (12). Educators have been aware for some time of the importance of non intellectual factors in successful teachers. The possibility exists, therefore, that the M-F trait or others similar to it, may be related to the problem of teacher selection. Actually, the problem of the selection of good teachers divides itself into several phases. One phase is the selection of highschool graduates who will do successful college work; another is the actual training of the teachers and the elimination of those not suitable. Finally there arises the problem of the actual placement of the graduate in the situation in which he will find his-greatest satisfaction and usefulness. Perhaps it is our tendency to concentrate upon one of these phases at a time which has been responsible for producing as many admittedly poor teachers as we have. It is common knowledge that the personality of an individual is a large factor in determining his teaching success. His entrance to a teachers' college, and his evaluation while enrolled, are likely to depend