ColaFizz
Schools normally give some/all of the following scholarships
Academic
All rounder
Music
Art
Drama
Sport
If you wanted to get an academic, you would have to excel in all standard subjects maths, english, and one language, you would also have to show outstanding potential in the other subjects that the school has to offer.
All rounder would be that you have a sound academic ability in all subjects plus you are likely to feature for the school in the teams, and have a role in the school production, and be a member of the school orchestra and give everything the school has to offer a go.
Music would normally be grade 4 or 5 at yr 7, and grade 8 for sixth form.
Drama would normally be grade 4 or 5 lamda exam, plus shows outside of school for example local pantomime.
Sport would be minimum county level at yr 7 if not national.
Scholarships can be anything from 5% to 75% and is up to the school.
On top of these scholarships you can have discounts for siblings/forces etc.
You can also be means tested for the difference between the scholarship and the fees this is called a bursary.
Some schools set the qualifing aspect for a bursary as low as a household income of £17,000 per year (earn above this no bursary), but the case with all schools is if there's equity in your home expect not to receive a bursary. If you have anything that could be sold (shares for example) expect no bursary.
As they say there is no harm in trying, just make it realistic for your daughter, and ensure that if she doesn't pass, she knows you weren't set on it, and life will continue.
Hope this helps.