The development of the IDEA system, a survey concerning teacher effectiveness at Kansas State University (KSU) is described. The system originated at KSU during the 1968-69 academic year as a means for investigating the effectiveness of teaching and for improving instruction. A discussion concerning its purpose and rationale is included. The development of a list of 10 course objectives as part of the survey instrument is described. Student progress, relationships between teaching methods and objectives, and the effect of class size and student motivation on teaching effectiveness are also measured on the IDEA survey. Statistical data and reliability and validity information concerning the development of the survey are discussed and the data are tabulated. The intercorrelations between survey items and variables are also presented. Forms 1, 2, 3, and 4 of the IDEA system are included and a list of items comprising a priori scales is appended. (SF)