10! She's in yr6 but is the youngest in the year.
The girl in question seems to find someone in the class to pick on every few weeks for a few days, last year she had a birthday sleep-over that descended into a 'Lord of the flies' type night, but most of the parents didn't find out until months after...there are only supposed to be daughter & one other girl going tonight, however that makes 3 girls - everyone knows that if you put 3 girls together two of them will gang up on the other one. I have visions of my daughter trying to walk home on her own in the middle of the night....
...the boys were never this difficult!
Going out isn't an option, & we have absolutely no room to have any of her friends stay over.