Evaluation questionnaires were administered to more than 92 percent of the professional staff associated with the Knox County Extended School Year (ESY) Program during the summer and fall of 1974 and to more than half of the students enrolled in the summer quinmester, along with a random sample of 10 percent of the students enrolled in October 1974. Interviews were conducted with a small sample of teachers at each ESY school to verify findings. More than two-thirds of the primary, middle, and high school student respondents liked the ESY program. The most favorable attitudes were expressed by summer quinmester and primary-level students. Majorities of teachers at all levels favored ESY; however, approval was much greater among those who were involved in formulating objectives and writing curriculum modules. Teachers not involved in the curriculum development considered their initial orientation insufficient and their understanding of program objectives somewhat inadequate. Administrators and supervisors expressed a feeling of achievement and satisfaction from their work. A sampling of voter opinion in the community indicated that the program of general information concerning ESY was very effective. (Author/IRT)