Public School Atheists

Stephen Fry,Hugh Laurie,Dawkins,Hitchens,Jonathan Glover etc. What is it about public schools that brings out the atheist in us? Public schools give us a good formation in the Arts and Sciences.But Theology is often scandulously ignored. Hence the general ignorance in otherwise gifted atheists. I only read about Aquinas once at school-and that was in a book by Bertrand Russell.