Complex sentence: The school has more than 930 students on roll and the head teacher is Claire Hewitt who took up the position in January 2009 and is the 10th head teacher in the school's history.
Split into simpler sentences: The school has more than 930 students on roll. The head teacher is Claire Hewitt who took up the position in January 2009 and is the 10th head teacher in the school's history.