An Open Campus policy was put into effect on a trial basis at Interlake High School, Bellevue, Washington, during the 1971-1972 school year. Under this policy students were allowed to leave the campus during the lunch period and, with certain restrictions, during other periods in the day. The collection of data was focused by questions stated by the Superintendent of Schools and guidelines for evaluation set up by the Interlake High School Parent, Student, and Faculty Advisory Council. Survey instruments were distributed to determine the observations, attitudes and feelings of various school and community groups in regard to (1) the program as a whole, (2) the questions stated by the Superintendent, and (3) the objectives stated by the Advisory Council. Data as to related expenditures, student academic performance, and attendance were collected, and representatives of the Bellevue Police Department were contacted. This report includes the questionnaire questions and responses and other data. The conclusion was that the open campus policy was very successful. The effects on the majority of students, faculty, parents, and businesses appear to have been beneficial, and there appear to have been no major problems created. A drop in lunchroom receipts is to be considered in perspective. (Author/DJ)