This is a long way in the future at the moment - DD is going into Y9, DS into Y&, but just planning ahead 
We don't have the income or savings to fund private education for both DC all the way through, but I think we have enough to cover 2 years each. The state school they attend (will attend, in DS's case) does not have a sixth form so they will need to move anyway.
So is it worth considering sending them to private school for sixth form - would it help them to acheive their best at A level, or would they be outsiders, plebs, not be able to keep up, do just fine at the state schools available? Both are academically able.
I'm a complete novice at private education anyway, so don't even know how to start researching it! Any advice greatfully received.