To add that being properly prepared for all exams is necessary but this doesn’t mean endless tutoring. However, some of these schools are highly academically selective and parents will tutor. It’s a vicious cycle though as over the years the tests have had to get harder because more were passing due to tutoring. You are also slap bang in the middle of motivated middle class territory in north London. It would be a brave parent who didn’t properly prepare.
They do need to be familiar with verbal and non verbal reasoning. If you have the time and patience and work well with your children then this can be done at home with books or Atom Learning.
If they are at a state school then maths might need some top up. The highest sets in prep schools are often 18 months to 2 years ahead of the national curriculum.
Otherwise just make sure they are reading widely and extensively. Let them choose their own books - there’s no need to be reading “War & Peace” and schools would see right through that 😂😂😂
Exam technique is crucial and it needs to be tailored to the specific entrance tests. If it’s online then practice online. Is accuracy more important I.e. the test is adaptive so getting questions right is more important than the number of questions answered? Can they go back and review questions or miss them out etc.
If it’s pen and paper then teach about missing a question out and going back to it, making sure workings are clear, looking at the number of marks available for a question - three marks meaning you need to be provide three points etc.
Timings and being used to sitting an exam is also important.
The biggest piece of advice is being realistic about your child’s abilities. I see children tutored for years to get into these top academic schools and then not get in, or just about scrape through and then struggle whilst there. Sounds like your daughter stands a decent chance but there are fewer places than at a standalone 11+ only school due to children coming up through their prep schools. I would consider adding in FHRP and somewhere like Queenswood to your list as a result. Lots of girls from north London at both.
We have never formally tutored our DC. Of course we did stuff at home. We started in Y5 and it was just books and Atom Learning at home. Honestly no more than half an hour a day, some days none at all. In the summer they did some full exam papers but otherwise kept it short and sweet like we had been.
Offers included NLCS, City Girls and UCS.