Complex sentence: The foundation stone for the present school building was laid by the then Chief Minister of West Bengal, Dr. B.C. Roy on December 9,1957 and in March 1960; the senior school was transferred to the present building at 78, Syed Amir Ali Avenue.
Split into simpler sentences: The foundation stone for the present school building was laid by the Chief Minister of West Bengal at that time, Dr. B.C. Roy on December 9,1957. In March 1960 the senior school was transferred to the present building at 78, Syed Amir Ali Avenue.