This report provides a broad overview of previous NDEA institute evaluation reports on summer institutes two or more summers ago. Emphasis is on how to make the institutes more effective. Primary purposes of the summer institutes are to: 1) change what and how students learn in elementary and secondary school classrooms; and, 2) change college and university teachers and courses in which prospective teachers are educated. Common patterns as to participants, faculty characteristics, and structured content are evident in these reports. Institutes concentrated on narrow topics organized around a period, problem, or theme, and attempted to teach something new and innovative. Effective institutes are exemplary, advanced, innovative, intense and cogent motivating forces. Institutes are most successful in renewing teacher's interest in and teaching them something new about the content of their subject, but less successful in helping teachers change their teaching methods, or to use different and new material and media in their courses. Experiences of the summer institutes indicate that college and university teachers need to understand the limits, possibilities, and politics of teaching in the schools, about what can be changed, and how changes occur in a system. (Author/SJM)