Just wanted to say, my eldest has started Prep this year at 5.5; out of my three he will be the oldest starting school, my middle son will have just turned 5 a month before school start and my youngest will be 5 in the March of his first year. Im not worried at all about them not being ready, but if I were I would probably hold them back; but they WOULD go into Prep as a 6yo not automatically into Year 1. I asked our school because I wasnt entirely sure Ds2 would be ready, but if we kept him back he'd be in Prep with his younger brother.