The origins of CBS are closely linked with the establishment of the
Methodist Episcopal Church in
India. In January 1873, the Reverend
William Taylor founded the work of the
Thoburn Methodist Episcopal Church in
Calcutta (
Kolkata). He was succeeded by the Reverend
James Mills Thoburn. The latter's ardent preaching soon rendered the Entally Baptist Chapel unable to cope with the increasing number of converts. In February 1874, a new chapel was opened at 145
Dharmatala Street, built at a cost of 16,000
rupees largely due to the generosity of George Bowen of Bombay who donated 10,000 rupees. Soon even this chapel proved unable to accommodate the growing congregation, until a larger church was constructed on Dharamtolla Street, where it stands today. The New Thoburn Church was dedicated on 31 December 1875. In 1888 Rev. James Mills Thoburn was elected Missionary Bishop of India and Malaysia - the first ever Missionary Bishop in India. In 2005 CBS won the under-16 national cricket tournament, and in 2004 the national rounds of the Inter School Frank Antony Memorial Debate. The school offers courses in science, commerce and humanities (started in 2019) for the students enrolling in ISC. ==Notable alumni==