Its so hard as it really depends on the individual child.

When I started school you had to be 5 by June 30, (is that 4.5 years?) and my birthday was on July 8, so I missed out by 8 days.

I think, and my parents always thought that academically I should have been in the higher grade.

Emotionally and socially though, it would have been a complete disaster, and so in a way I am glad that mum didn't let them induce her and I was born a full month late!

***Edited to add: Milo will be starting at 5y 3 months then I guess? Am I doing the maths right??***