Although there are students who come from various Catholic Parishes and Christian Churches, there are two parishes which directly support IC Schools.  Immaculate Conception Ukrainian Catholic Church in Hamtramck was the founding parish for the school at its founding in 1936, and the St. Josaphat Catholic Church in Warren are the primary churches to which many families belong.

IC Schools abides by the academic standards established in accordance with the Archdiocese of Detroit, however, the schools are not financially supported in any way by the archdiocese.