Curtis Institute of Music vice president and dean John R. Mangan has resigned, school officials said.
Mangan, 47, who held the post for 31/2 years, declined to speak about his reasons for leaving the conservatory, referring a reporter to Curtis' press office.
"John resigned on Jan. 4 indicating that, as Curtis prepares for the next strategic phase of its future, he made the decision to step down," said a spokeswoman. "He plans to explore other opportunities in his field."
At Curtis, the dean oversees musical and liberal-arts curriculum and the library, and works closely with president/CEO Roberto Díaz and others on student and faculty matters.