Complex sentence: Originally built in the early 1970s to alleviate the problems of over crowding at the Stamford Hill and Morecombe Lodge site, the main building of the school has seen improvements made to it such as new extensions.
Split into simpler sentences: Originally built in the early 1970s to alleviate the problems of over crowding at the Stamford Hill and Morecombe Lodge site. The main building of the school has seen improvements made to it such as new extensions.