Since the spring semester of 1969, Kansas State University faculty have used the Student Evaluation of Instruction and Courses program known today as IDEA--Instructional Development and Effectiveness Assessment. Voluntary participation in the system has grown from less than 80 classes in 1969-1970 to more than 1,600 classes per year in recent years; approximately 750 different faculty members participated over a recent three-semester period. The purpose of this study was to gain "consumer" reactions from faculty who have used the Office of Educational Improvement and Innovation to improve their instructional effectiveness. A structured interview was conducted with 93 randomly selected faculty members who had used the system during 1976. The descriptive statistics revealed that the sample included a good cross-section of the KSU faculty who use the system. Their responses are reported regarding overall reactions to the system, recommendations about frequency of evaluation, student conscientiousness, and using the results for instructional improvement. Statistics and commentary are included in this study on the interview method, the relationship between submission of results and salary or tenure decisions, evaluation procedures, and uses and effectiveness of the IDEA system. A descriptive letter to the faculty, interview guide, interview form, and survey form are appended. (LBH)