In the city of Saskatoon (Saskatchewan), parents and students have a unique opportunity to choose between nondenominational public schools and publicly supported Roman Catholic schools, with no penalties or fees attached to either choice. The research described was carried out principally through face-to-face interviews with the officials of both school systems. The paper first deals with the cultural, historical, and legal background underlying the agreement to allow free choice between systems. Following that is a description of the administrative structure of the two systems and of the alternatives provided. Finally, the causes and consequences of this variation are discussed. Further study is warranted in this area, both to determine the effects of the agreements on the way families choose schools, and on the interacting effects of parental choice, the agreements, and school climate. The situation is also of interest to those concerned with voucher plans because, although not strictly speaking a voucher plan, the degree of freedom of choice present in Saskatoon mimics many such plans. (Author/MLF)