I'm sure it isn't necessary to tell the teacher what mood your child is in every morning
I don’t need the teacher to know what mood my child is in every morning but I do need her to know if my child has had a bad morning (by which I mean she’s had a meltdown and I’ve spent the best part of an hour calming her down and getting her into school). Writing in a diary or communication book would be great, except I’m too busy supporting both children to sit a write a bloody note when her teacher and I have an established shorthand for how she’s doing.
Yes some parents are there to helicopter, but for some of us that two minute chat can be the difference between our children coping at school or not.