Hope it wasn't my dd who rushed you round!
The Sports hall certainly is impressive, not sure of the size, but it also houses an equally impressive dance/drama studio. This isn't in the traditional building of the school, but in the new building, along with wonderful new science labs, if my memory serves me correctly!
There are lots of sporting opportunities, if your dd is keen!
Have you had the Admissions morning at the school or did you miss it? I seem to remember ours was early in April.
If there's anything at all I can help you with, feel free to pm me.
My dd is currently in year 8.