After securing first class first position (gold medal) in MSc Statistics, he joined Gauhati University (GU) in 1969. He received Phd in 1981 under Prof. Emeritus J Medhi and went on to retire as Professor, Head and Director of Population Research Centre in 2006.
Prof H Choudhury taught Statistics, Econometric, Education and Mathematics in a host of departments, colleges and universities in NE India. Under his supervision eleven (13) Phd scholars were awarded Phd degrees.
He was the former president of Gauhati University Teacher’s Association and member of the Academic Council. He was actively involved with affairs of several educational institutions and universities of India and North East India as member of governing bodies, executive and academic councils.