John Mangan, the Graduate School’s assistant dean of administration, will leave Yale in June to join the Curtis Institute of Music as vice-president and dean. Mangan will oversee the academic, musical studies and performance curricula at Curtis, succeeding Robert Fitzpatrick. Prior to becoming Yale’s assistant dean, Mangan served as the dean of Jonathan Edwards College. A classical guitarist, he has a Bachelor of Music degree from the University of North Carolina School of the Arts, a master’s degree from the Yale School of Music and a doctorate in history and education from Columbia University. Curtis is the most selective higher education institution in the United States, with a 4.8 percent acceptance rate in fall 2007, according to US News & World Report.