I'm 14 and my school allows them because the girls at my school have learnt how to pull their trousers up every once in a while.
Also the girls wear black tops underneath their school tops and pull them halfway down their bums 1) For warmth (no one likes a cold back) and 2) The school tops are quite short and when you bend over.. Uh oh, so we have to.
It's not the girls' fault, these trousers are comfy and if you're not rolling around in the mud with them then they will last quite a while. I've had mine since about April I think, and now I need to buy a new pair because the back panel has come detached and they have a small hole. But that's about it, they would probably last longer if I had looked after them better.
The school hasn't complained about them at all, it's just the nylon skirts that they're worried about (they ride up when you walk etc and are short anyway)
I know you guys are going to think I'm biased because I wear them and love them, and so do a lot of my friends, but c'mon, you know young girls have a pressure to be like everyone else. The schools shouldn't force them to wear unnatractive trousers if they feel and look better with the 'tarty' Miss Sexy's.
You can't even tell what brand they are unless you look closely at the 2cm^2 label that says the name on them.
My mum has no problem with them and neither do any of the thousands of mums at my school, or the hundred odd teachers.
They aren't too low, as a daily wearer of these trousers i would know, wouldn't I?
They aren't too tight, would you say leggings are too tight? It's hard to get them to be tight anyway, I'm an 10 on the bottom and the 10s were only a little bit tight, and I had to buy size 12 trousers so that I could get them on comfortably, and now they're baggy as anything.
Send your daughter to school in horrible trousers if you want, but if she prefers these then it'll only cause problems for her and for you.