This study attempts to evaluate Toronto-area schools built using the Study of Educational Facilities (SEF) building system from the standpoint of the teachers and students who use the schools. While the SEF building system did not dictate an open-space plan, all local school boards in the Toronto area designed their SEF schools with varying degrees of open space. Emphasis of the study was on analyzing students' and teachers' reactions to open-plan schools, rather than to SEF schools as such; however, only SEF schools were included in the survey. An extensive questionnaire was administered to a sample of 979 grade five and grade eight students from 22 SEF schools to determine their attitudes toward the open educational program and building design. A longer and more sophisticated questionnaire was completed by 535 of the 586 professional staff members at the same 22 schools. Responses to the different questionnaire items are presented in graph and table form, grouped in separate chapters according to subject matter. Replicas of the student and teacher questionnaires and sample floor plans of several SEF schools are included in the appendix. (JG)