Most parents who choose to invest in private school fees will have been sensible enough to do a bit of forward planning. VAT on school fees has been in the offing for years, so most private school families that I know (and I know plenty) will have planned around it and built in sufficient buffers to cover changes like this. I do know a few families who are quite pissed off about having to pay more tax but not a single family with any intention to move their children.
Of course, there will be some parents who have failed to plan properly for all eventualities and/or had other unforeseen circumstances that will render them unable to pay the increased fees (which are likely to be much less than 20% extra in reality). In some cases, their kids will have to move, just like others who have had to move because of job losses, parental illness, rising interest rates etc. I do feel sorry for those children having to change schools mid way through their education because their parents have committed to something that they can't really afford, but sadly, kids have to move schools for all sorts of reasons, and sometimes it's just one of those things. With engaged and supportive parents, I'm sure that the vast majority will make the transition successfully. Going to a state school really isn't the end of the world, no matter how some parents choose to portray it.
As far as I'm concerned, it really isn't spite or envy. We could have gone private if we had felt that it was worthwhile, but having considered all options, we concluded that it wasn't worth it for our dc. Other parents will reach different conclusions, and that's absolutely fine. I do not resent their choices in the slightest, I just think it's right that they should pay tax on what I consider to be a luxury purchase.
What I do resent is the ridiculous bleating that I keep seeing on these boards from people who seem to have no awareness of how pathetic they sound. There are so many much bigger injustices in our society to get upset about, how on earth can this be the one that people choose to get so irate about?!