One Church One School (OCOS) utilizes the "P" Principle of total involvement to provide human and fiscal resources to support a nurturing school community environment for student development. Pastors and parishioners, principals and school personnel, parents, pupils, politicians, popular personalities,  and philanthropists  all connect the village to the school and child. One Church One School Community Partnership Program Headquarters:  7841 S. Wabash Avenue Chicago, IL 60619 773.651.0071  Telephone     773.651.1056   Fax E-mail: ocos@onechurchoneschool.org