My 9 year old is being bullied

So for the past month my bubbly daughter has become a shell.

Kids can be so mean!!

Boys in her school year are saying really horrible stuff to her Like your teeth are yellow your fat your ugly

My daughter is no way fat she's the tiniest thing ever beautiful little darling.

Her teeth r perfect and I feel stupid getting so angry about it but I've been in the school and I'm fed up with nothing happening... I remind her every day how special she is. And how lucky she is to be perfect (IN MY EYES ANYWAYS) Well enough is enough and tomorrow I will be apporcing his mum in a grown up matter as it's got to stop bullying is sick and my kids no never ever bully anyone everyone is different but everyone is also special in there own way!!! I hate this world we live in kids can be so cruel.