One of three main streams of Presbyterian organizing bodies in the United States, formed of Scotch Irish, Welsh and English Presbyterians in loose federation of presbyteries across the territories north of New York City and south and west of Philadelphia, and down the east coast into North and South Carolina. The church congregations gradually united in synods, supporting with finances and pastors the church planting that followed pioneers settling, moving south and west. A tacit agreement between the leaders of the UPCUSA and the UPNA divided Africa between them for mission influence, with the UPCUSA taking Cameroon, Sierra Leone, and Ivory Coast, and the UPNA taking Egypt, Sudan (north and south) and Ethiopia. Only after unification between the two streams in 1957, were Presbyterian mission high school students from Cameroon able to attend Schutz. Their parents became part of the InterMIssion School Committee, later called the Schutz School Committee, as the oversight of Schutz was extended to members of the Cameroon West Africa Mission.