I've come to realise that by mistake I gave the wrong birth year at school, when my child started kindergarten. 2012 instead of 2011. I only realized my mistake when sorting out passports this last month and entering the correct birth date from birth certificate. He is in year 9 but according to his correct birth year he should be in year 10. I feel like an awful mum, that i did not pick on this, I'm feeling really embarrassed to tell the school. My husband is super annoyed at me saying how silly could I have been to not realise. I hope that the school does not put him in year 10. Am I the only one who has done such a silly thing.