Dartmouth and Cornell, the most Greek-friendly Ivies, have strong old locals that stand arm-in-arm with the national houses to a degree that I think is quite unusual. Both schools, especially Dartmouth, have a long and proud tradition of national Greek houses defying racial and religious restrictions as early as the mid-1950s, and of abandoning their national organization when it ordered them to depledge a diverse member. Some of these houses have since rejoined the nationals, and others remain local.
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