DD10 tried to sneak the uneaten crusts from her school lunchbox into the rubbish bin without me seeing AGAIN today - she knows full well that I expect food to be eaten, not wasted.
I have told her that the next time I find out it happens - I'll give her a packed lunch suitable for a much younger child; one of an age who I'd accept leaving their crusts.
We've had sulks, stomps and 'it's not fair'.
AIBU? Tbh, it wouldn't bother me if she managed to work out that she can chuck them away at school (I'm guessing that the staff won't let her) but bringing them home and throwing them away infront of me really irks -