Information Based Evaluation (IBE) is identified as a design procedure for assessing a variety of projects, programs, and educational changes. IBE was used to evaluate a Comprehensive Diagnostic Teaching Center (DTC) which, in addition to providing teacher training and services to handicapped pupils, would bring together and focus all of the resources of the Indianapolis Public Schools on this problem. Students were referred to the DTC by the school psychologist usually in cooperation with the classroom teacher. The philosophical approach which guided the diagnostic activities of the DTC is that of diagnostic/prescriptive teaching seen as an on going educational process wherein instructional strategies, selected as a result of diagnostic activities are matched to a student's unique learning mode. IBE places the information needs of concerned persons as the overriding concern of any evaluation. Reasons are stated indicating the inadequacy of traditional performance objective evaluation. However, IBE is not free of the use of objectives; their use is justified when feedback is important to information users. When looking at the evaluation process for any program, it is recommended that one concept of evaluation is adopted and maintained through the life of the project insofar as possible. (RC)