As the title says. Dd started school around 3 weeks ago, started off brilliant. Having been to nursery since 1 (3 days per week) she adjusted well. Always said how much she loved it. We've had the usual tired tantrums from starting school but nothing shocking. Then couple of days ago pulled aside by a teacher who told me she hit a child so hard on the face she left a big red mark. She was NEVER like this at nursery. Never. Told her how upset I was that she hurt another child and how bad it is, she knows this anyway but I still went through it all, she went to bed with no story. Today, pulled aside again, she's thrown a toy and hurt a child lip AND scratched another child. What has happened?? I got into the car and cried. She's not like this at all, very normal home life. One year old little brother, not with the father but lovely relationship with step dad and good relationship with her own dad. So what could possibly cause this? She knows the consequences and knows how it hurts them. She's otherwise so lovely.