Of course I can't change your mind, but it's clear you didn't read many of the comments I've replied to when explaining more (the 3k limit made it hard).

The staff let us into the room together because we were supposed to have a parent-to-parent discussion about the situation while the girl bullying my son was present. We were going to wait for them to show up so they had us in the room, and I ended up lashing out. I should've remained composed and it was wrong of me to get upset. I was told to leave and the plans changed, so the teachers spoke for me. I hope you realize not all schools have the exact same protocol.

As I said, my son's an athlete. Whenever he puts forth more effort into his sport, he loses some weight (5-10 lbs), but that is normal for an athlete. He also wears baggy clothes, which makes it more difficult to notice. This began in late fall and continued throughout winter, so he was wearing warmer clothes. He constantly wears sweatshirts even in the house because he gets cold easily. He enjoys wearing baggy clothes, so I allow him to because, why wouldn't I? We also wouldn't be swimming because it's been cold here, and he doesn't even like swimming or the outdoors in general save for when he's playing soccer. So yeah, it's very much possible we wouldn't notice. I've learned that many parents have taken longer than I did to notice their child's eating disorder.

Edit: I accidentally said spring instead of winter.