A letter (reproduced) went out to Juilliard staff last night from the college president, Joseph W. Polisi. Extract:
I am writing to let you know that the School has received a report alleging sexual misconduct by faculty member Choong Mo Kang. His alleged misconduct involved a student. Juilliard reported this matter to law enforcement and has prohibited Mr Kang from returning to School premises. Mr Kang has been suspended pending further action by the School.
Juilliard is cooperating fully with the external law enforcement investigation…
The School does not tolerate inappropriate or illegal conduct, investigates all allegations thereof and takes definitive and corrective actions based on the results of those investigations.
UPDATE: Choong denies the charges. See here.