The purpose of this study was to evaluate the on-site evaluation phase of the three-phase system for statewide evaluation of occupational education programs in Illinois. The specific problem was to explore the nature of selected changes in the occupational education programs of comprehensive secondary schools over five years and the extent to which these changes may be related to the on-site evaluation process. Data were collected on the fifteen comprehensive secondary school districts in the sample through two questionnaires administered to selected local education agency (LEA) personnel and the on-site evaluation. Among the findings were that (1) both LEA personnel and on-site evaluation team members agreed that there had been improvement in all occupational education program components and that the on-site evaluation had contributed to that improvement; (2) both LEA personnel and team members reported that the on-site evaluations were a beneficial and worthwhile investment of resources, and (3) LEA personnel and on-site team members agreed as to the relative improvement in each of the program components. (LRA)