Few Assemblies of God educators have attained the breadth of influence achieved by McGee. His extensive college and seminary teaching experience spanned five decades (1967-2008), he was a prolific author, and he helped to build bridges through his leadership in numerous professional and interchurch organizations.He was Distinguished Professor of Church History and Pentecostal Studies at the Assemblies of God Theological Seminary, where he taught since 1984. He previously taught at Central Bible College (1970-1984) and Open Bible College (1967-1970).