The Board was subsequently renamed as West Bengal Board of Secondary Education in 1964, under the West Bengal Board of Secondary Education Act 1963. During its long history the Board was superseded by the State Govt. twice. The first instance was from 1954 to 1963 (Bengal Secondary Education (Temporary Provisions) Ordinance 1954) and the second occasion arose from 1978 to 1980. The Board, an autonomous body, in its present look came into existence from January 1964 with Dr. J.C.Sengupta in the Chair.
The operational ambit of the Board has increased manifold over the years. In 1951 the Board started its journey with 1270 high schools taken over from Calcutta University which increased to 2312 by the end of 1963 and to more than 8000 by the, end of 1975 including some schools outside the territorial jurisdiction of the State. Presently the Board is handling around 10238 numbers of schools.