Such a difficult and emotive topic! I've been teaching K-2 in NSW for 14 years. I always supported starting later, particularly for boys. I'm in a similar predicament as the OP with my DS2 who turns 5 on the 10th February. I fully believed in holding him back an extra year. However now we are here and his preschool teacher fully believes he is ready. He's just about to complete our transition program and all the kindy teachers believe he is ready and would be bored stupid with another year of preschool. I'm conflicted on so many levels! My personal philosophy says hold him back but my actual child looks as though he is ready. Really tough!