The Pacific School of Religion (PSR) is a private Protestant seminary in Berkeley, California. It maintains covenantal relationships with the United Church of Christ, the United Methodist Church, and the Disciples of Christ, ensuring the school provides the necessary requirements for candidates to seek ordination within these denominations. These three denominations account for approximately half of the student population of PSR. The school has also maintained close relationships with the Unitarian Universalist Association, the Universal Fellowship of Metropolitan Community Churches, the African Methodist Episcopal Church, as well as other denominations. Over the years PSR has provided training for clergy and leaders from a wide range of religious traditions including Buddhists, Jews, Pagans, Pentecostals, and Roman Catholics.

The United Church of Christ (UCC) is a socially liberal mainline Protestant Christian denomination based in the United States, with historical and confessional roots in the Congregational, Restorationist, Continental Reformed, and Lutheran traditions, and with approximately 4,600 churches and 712,000 members.The UCC is a historical continuation of the General Council of Congregational Christian churches founded under the influence of New England Puritanism. Moreover, it also subsumed the third largest Calvinist group in the country, the German Reformed. Notably, its modern members' theological and socio-political stances are often very different from those of its predecessors.