My SIL does daycare, and she thinks I tell the parents too much. I do tell them if the child has had a rough day. I do tell them if things are weird for the child. I don't tell the parents EVERY incident, though.

I had that issue with the 3 year old a little while ago where I terminated due to persistent aggressive behaviour, and she said that I didn't tell her enough. I don't think you can win. You're either viewed as nitpicky and tattling or you're withholding information.