In 1955 Kelly was sent to
Northern Rhodesia as a
missionary. He taught mathematics at the Canisius School. He was ordained in 1961, and later became principal of the school. Then, he received a doctorate in education from the
University of Birmingham. In the mid-60s, he became a citizen of the new
Republic of Zambia. Fr. Kelly then established centres for education, veterinary science and agriculture in
Lusaka. He was then elected Dean of Education at the
University of Zambia and, subsequently, Deputy Vice-Chancellor and Professor of Education. Fr. Kelly was intimately involved in planning for health education during the
HIV/AIDS pandemic in Zambia. ==Honours==