DD's education is something of a compromise.
She is highly academically able (an 'all Level 6s at the end of primary' type child), a gifted artist, a pretty decent netball player and a very able dancer (she would have a reasonable expectation of being a finalist in a national competition her teacher has entered her into, for example).
Dancing is something that may stop at 18 - most 'local' dance schools only cater for up to that age - or may go on full-time with a view to a career, via dance college. That route is open to her, as several girls a year go down that route from her dance school.
However, we ruled out residential dance school from the age of 11, because the academic provision isn't quite good enough and DD is not convinced that dancing is 'the career for her', despite loving it.
Academically, she passed for a superselective single sex grammar some miles away, but she goes to the excellent local mixed comprehensive. We know it can help her gain the grades she is capable of, and the destination universities are great. Perhaps she would have done a little better at the grammar, but with the bus and other commitments that might well have compromised her dancing.
In terms of sport, she does the full range at school, because high level dance won't be available to her as a 'pure hobby' once she has left school, whereas sport is very much more accessible and i think will remain important to her. She trialled for county netball a while back: fortunately she had an 'off day' - it was a rest day in a local dance competition, I think her mind was on other things - so we haven't had to face that!
Oh, and she plays the cello. Not very well. She is finding it VERY instructive to be not very good at something....
The problem with the 'all specialist schools' route is that it leaves someone like my DD having to make an early choice about which of her 'specialisms' she would choose to focus on. As t is, we can keep most of them going through a combination of comprehensive school and local community provision, though I am constantly aware that via this route we are shaving a little bit off what she could be achieving in any sphere.