Right, so where does the “extra” £6k come from? Either the existing education budget funds it - in which case the £6k has to go down - or the education budget goes into deficit and the taxpayer has to fund it from elsewhere. It isn’t “new” money because the tax has already been paid and the education budget set.
If the education budget one year is £6k per child, for x number of children, and then suddenly there are an additional number of children, but no increase in the education budget, what happens?
Either the education budget has to increase (where from?) or the amount per child has to drop as it’s now divided between more children.
There’s logically a point at which the amount raised from VAT is cancelled out by the extra cost to the taxpayer of the extra children moving back into state; and/or the amount per child overall diminishes.
A simplistic example:
Imagine the state education budget is £1200 for a total of 200 children - £6 per child. School A has 20 children, so it has a total of £120 funding.
Then 20 more children join the state sector. The education budget is still 1200, but for the next academic year it’s divided by 220 children it’s now £5.45 per head.
Two of the “new” children join School A. The total number of children is now 22, but at £5.45 a head their income is now £119.9.
Do you see how this works? Obviously the numbers differ depending on economies of scale, but at a certain point of adding children you also add more costs - staff, in particular. So you can’t just keep adding more kids without incurring extra costs.
It’s entirely possible that schools’ income actually decreases. The alternative is that the education budget has to increase to maintain that £6/£6k per child amount. But where from? General taxation at the cost of something else? Another tax rise elsewhere? Is the VAT raised going to equal the extra amount? Probably not even close, and Labour haven’t actually committed to that — just said it’s for free breakfasts etc.