sentences:  He is an Auxiliary Director of the International Board of the Suzuki Association.He was Professor of Violin at Oberlin Conservatory from 1962 to 1971 and Chairman of the String Department and Kulas Professor at the Cleveland Institute of Music (CIM) from 1971 to 1981.He was a member of the violin faculty at the Curtis Institute of Music from 1975 to 1985 and head of its violin department from 1981 to 1985.