OverviewJohn Ley is currently Assistant Principal at Xavier College, Llandilo, and a member of the 2012 HSC assessment committee. He was formerly Head of Mathematics, Caroline Chisholm College, NSW and his qualifications include B.Sc., Dip Ed UNSW, M.A. Sydney, Grad. Dip in RE ACU, Diploma in Children’s Services. John commenced teaching in 1982, teaching in five schools, holding positions of Technology Coordinator, Mathematics Coordinator and Assistant Principal, and then became Education Officer, CEO Parramatta between 2000-2001. John has published a number of articles in Reflections Magazine since 1995 and is the author of the INSIGHT mathematics series in NSW.