Belvin taught in taught school at Mayhew, Bryan County for 15 years until in 1941 he was elected Bryan County Superintendent of Public Instruction, a position he held until 1952.
Belvin taught in taught school at Mayhew, Bryan County and Choctaw counties from 1923 until 1939. In 1941 he was elected Bryan County Superintendent of Public Instruction, a position he held until 1952.