Book excerpt: This book draws upon the authors understanding and findings from four qualitative studies conducted within two Canadian provinces as well as an amalgam of relevant documents of the Catholic Church, the academic writings of others, and media reports. It is from those sources that the authors attempts to shed some light on the phenomenon of the inclusion of non-Catholic students within 10 dimensions: social/ cultural, political, financial, legal, racial, administrative, pedagogical, psychological, spiritual, and philosophical. The data from these four studies is from constitutionally protected and funded Catholic high schools. The other sources of data are both national (Canadian) and international. Dr. Donlevy is the Associate Dean (Interim): Graduate Division of Educational Research in the Faculty of Education at the University of Calgary and the Vice-Chair of the University of Calgary’s Conjoint Faculties Research Ethics Board. He has taught grades 4-12 (inclusive), been a school principal, and is permanently certified as a teacher in both Alberta and Saskatchewan. He has negotiated on local levels for both the Alberta Teachers’ Association and the Saskatchewan Teachers’ Federation. He is also a member of the Saskatchewan Law Society, having become a barrister & solicitor in 1985.