Questionnaires sent to participants and their principals were used to evaluate the academic year institute programs attended by 572 secondary teachers of science and mathematics at selected Southeastern universities. Some 348 participants responded. Of these 148 were no longer teaching at the secondary level. More than two-thirds of the respondents had revised course content, made significant changes in teaching methods, or had accepted such additional responsibilities as department chairmen or curriculum coordinators. It was concluded that these institutes gave teachers the opportunity to obtain additional subject matter knowledge and helped increase participants' skill in teaching. (GR)