There is a general dismissal of the ‘1% increase in state school spending’ that this might lead to. Well, for starters, the IFS study that I linked to earlier thinks this would be worth 2%.
If you are a state school on the bones of your arse, 2% might be an extra teacher, so you can teach each year group separately, or a couple of extra TAs to deal with SEN pupils in a classroom setting. When you are starved of money, every tiny bit can make a huge difference to outcomes.
Ultimately, we need to raise more taxes to put into education (and health) and the only people who can pay are the wealthy. VAT on private school fees seems proportionate.
I do find the parents on here bleating about how kids will be affected seem to have total amnesia about the pupils who quietly leave every year due to divorce, redundancy or businesses going bad. It is a drawback of a fee paying system that, if you can’t pay the fees, the children have to leave (although, any half way decent private school tries to mitigate this and allow parents some flexibility).