This study describes and documents the history of a shared-facilities arrangement between Michael J. Brennan Roman Catholic Separate School and Pine Grove Public School in Ontario, Canada. Included in the report are a review of the literature on shared-facilities projects, legal agreements and statements of expectations from the pre-planning phase, interview and questionnaire data from all agents involved in the project, major issues and events, conclusions, and recommendations. Data from this study and the accompanying discussion suggest that this shared-facilities arrangement provides students with an excellent learning environment. In addition, a variety of serendipitous advantages are noted, such as student tolerance of other religions, joint parent organizations, community-school projects, inter-board communication, and creative administrative practices. Student Questionnaire, parent questionnaire and structured interview format for principals, directors and staff are appended. (MLS)