Complex sentence: The group of Trustees that had run the school since its foundation were replaced by a Board of Governors, pupils were now required to pay fees to attend the school, and a new building was constructed, opening in 1876.
Split into simpler sentences: The group of Trustees that had run the school since its foundation was replaced by a Board of Governors. Pupils were now required to pay fees to attend the school and a new building was constructed, opening in 1876.