This study develops guidelines and an in-service model for secondary teachers supervising student teachers. The study provides guidelines for developing in-service teacher supervision activities in secondary schools that serve as student teacher centers. The study seeks to determine selection criteria for supervising teachers; to ascertain in-service program activities considered valid by experienced supervising teachers, administrators and college coordinators; to measure professional reaction toward recent co-operative implementation of Senate Bill Eight; and to assess current in-service programs for supervising teachers in the North Texas area and test their conformity with criteria stated by known authorities. The study reviews literature in topical areas considered by known authorities to be those in which secondary-school supervising teachers must function. A questionnaire was developed, validated and mailed to an aggregate of 239 secondary supervising teachers, college co-ordinators, principals and central office administrators in selected public schools, and colleges and universities in the North Texas area. Collection of data resulted in a 73.6 per cent return in a ten-day period. Degrees of differences among the beliefs of participant groups were revealed by the chi-square measure of significance. It was found that the supervising teacher is the most influential feature of the entire student-teaching program and that in-service staff development programs concentrating on supervision of student teachers are both wanted and needed. It was further found that there is no central trend, in the North Texas area, to meet the desired need. Only ten per cent of the supervising teachers have had formal training in the supervision of student teachers. Those who were least familiar with Senate Bill Eight and the Texas Education Agency's guidelines supported one to three two-hour, inservice sessions per year. Central office administrators supported from four to six two-hour, in-service sessions per year.