Complex sentence: As of December 2016, the school has approximately 1,030 pupils, with ages ranging from 11--18, like many schools in Cheshire, it includes a Sixth Form.
Split into simpler sentences: As of December 2016, the school has approximately 1,030 pupils, with ages ranging from 11--18. Like many schools in Cheshire, it is an 11-to-18 establishment, meaning it includes a Sixth Form.