Dozens of former students of the Interlochen Center for the Arts in Michigan, where Jeffrey Epstein is said to have encountered some of his earliest victims, told a law firm hired by the school that they had been sexually abused by teachers, staff members, trustees and others affiliated with the institution in episodes ranging from the 1950s to the 2010s. In a report released on Tuesday, after almost two years of interviews, the law firm presented firsthand accounts of Interlochen alumni, who said they had been subjected to misconduct ranging from grooming and flirting to intercourse. The report said that some 70 of the former students described physical abuse and identified the perpetrators as 47 adults affiliated with the center. The report, which is 97 pages long, said that some of the adults figured in multiple accounts that stretched over decades, but that a majority of the episodes had occurred several decades ago and claims of abuse had dropped sharply since 2000. In recent years, Interlochen also became known as the place where Mr. Epstein, a celebrated donor to the school, returned to mingle with students, several of whom later said they had been subjected to his grooming and abuse. Between 1990 and 2003, he [directed] more than $400,000 to Interlochen, including $200,000 to build the Jeffrey E. Epstein Scholarship Lodge, created to house visitors and parents. In 2009, Interlochen renamed the Epstein lodge.