Trinity School (formerly Carlisle Grammar School) is a large mixed secondary school and sixth form in Carlisle, Cumbria, for students aged 11 to 18. Since September 2011, it has been an academy. It is a Church of England school with strong links to Carlisle Cathedral.
In 2009 the Ofsted inspection concluded, “Trinity School provides its students with a good education… the quality of the teaching and learning is good”. In its February 2012 inspection, Trinity was judged to be “good” in all categories.