As I’ve said before on these threads, there’s a huge confusion between the idea that a) it’s desirable that private school parents pay the VAT to raise money for the state sector; and b) it’s desirable that private school parents switch into the state sector.
Logically if you think b) is a good thing, then the VAT policy won’t make any money, and the end result is more kids in the state sector sharing the same amount of education budget, so funding per student actually goes down. How is that better for state schools?
Or if you believe a), then logically you want the policy to make as much money as possible, so you actively don’t want private school parents to switch into the state sector: you want them to stay put and pay the VAT or none of it works!
You can’t have both a) and b) together, because that doesn’t make sense in the first place. So which one do you think is good?