Crozer-Keystone Health System, based in Delaware County, Pennsylvania, United States
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Ralph Luker has questioned whether King's professors at the Crozer Theological Seminary held him to lower standards because he was an African-American, citing as evidence the fact that King received lower marks (a C+ average) at the historically black Morehouse College than at Crozer, where he was a minority being graded mostly by white teachers and received an A− average.