The CJS Purdy Trophy was first awarded in 2001. The following is a list of winners since 2001 –

Cranbrook School

2001

Knox Grammar School

2005, 2006, 2007, 2008, 2009, 2010, 2011, 2018

Trinity Grammar School

2002, 2003, 2004, 2012, 2013, 2014, 2015, 2016, 2017