The consequences were swift. Over the next two days, Ms. Groves was removed from the university’s cheer team. She then withdrew from the school under pressure from admissions officials, who told her they had received hundreds of emails and phone calls from outraged alumni, students and the public.

“They’re angry, and they want to see some action,” an admissions official told Ms. Groves and her family, according to a recording of the emotional call reviewed by The New York Times.

Ms. Groves was among many incoming freshmen across the country whose admissions offers were revoked by at least a dozen universities after videos emerged on social media of them using racist language.