Two years of evaluation studies by the Maryland Education Technology Network (METN) are summarized in this report, which analyzes the effectiveness of school-based technology centers. During the first year of evaluation (1987), four questionnaires were administered at seven pilot schools to students, center coordinators, computer using teachers, and non-computer using teachers; during the second year (1988), questionnaires were administered at nine other schools to students and teachers. The purpose of the study was to: (1) determine the adequacy of the technical implementation of the system; (2) assess attitudes of students toward using computers as learning tools; and (3) assess teachers' attitudes toward computers as an educational tool and their perception of the effectiveness of computerized versus traditional methods of instruction. Responses to the questionnaires indicate that students' attitudes toward computer assisted instruction (CAI) were very positive, and that they preferred learning in a computerized instructional environment to learning in traditional instructional settings. Teachers were also very positive in their appraisal of CAI, and over half of the teachers felt that learning in regular school subjects by average students had increased. Tables, figures, and charts displaying the results of the surveys and copies of the questionnaires make up a large part of the report. (SD)