Died Friday, January 25, 2019. Jean was born on December 18, 1923 in Indianola, Mississippi, the son of the late James Earl Calloway and Mittie Lou (Mitchener) Calloway. He attended Millsaps College in Jackson, Mississippi where he received his Bachelors Degree. He then attended the University of Pennsylvania where he received his Masters Degree in 1949 and his PhD in 1952. He taught at Carleton College from 1952 1960. In 1958-1959 he was invited for a year to the Institute for Advanced Study at Princeton. In the 1950's and 60's he was involved in the School Mathematics Study Group creating text books for the "New Math" for elementary schools. In 1965 he had the opportunity to travel to Mombasa, Kenya to help with a similar project along with his African counterparts to create their own curriculum after the country became independent. He traveled to China in 1985 as part of one of the first People to People groups. He was the Olney Professor of Mathematics at Kalamazoo College from 1960-1991 and expanded the Math Department from one man to its present strength. After retiring from Kalamazoo College, he spent 1991-1992 in charge of volunteers for the first Gilmore Keyboard Festival. He was a member of St. Luke's Episcopal Church since 1960, loved singing in the church choir and served on the vestry. He was preceded in death by his loving wife of 56 years, Anne Marie Whitney Calloway, whom he married June 21, 1952. He is survived by two daughters Nancy Lou Calloway of Kalamazoo and Catherine Anne Calloway of Kalispell, MT; cousins, Judy (Chris) Job and Marsha (Frank) Tindall and their families. He was preceded in death by his brother, James Earl Calloway, Jr.; and two cousins, Joyce Hull and Ruth Reynard. A memorial service will be held at 2 p.m. on Friday, February 8, 2019 at St. Luke's Episcopal Church, 247 E. Lovell St., Kalamazoo, MI 49007, with Rev. Dr. Randall Warren officiating. In lieu of flowers, memorial contributions may be given to Kalamazoo College or the Gilmore Festival. Interment will take place in Indianola City Cemetery in Mississippi. Friends may meet the family at a reception in the Guild Room of the church after the service. Memorials may be made to Kalamazoo College or the Gilmore Festival. Arrangements were made by the Langeland Family Funeral Homes, Memorial Chapel, 622 S. Burdick St. www.langelands.com.