OP, with as much respect as I am able to muster, please educate yourself on this matter as you are making a total tit of yourself bandying about terms like "education tax".
Independant schools lost their VAT exempt status under the current government. They previously had this under the rather spurious pretence that they were charities. VAT is currently 20%. That is why independant school fees rose by that amount. Ironically the link you keep posting explains all of this.
Kindly, you are commenting on something that you apparently do not understand and making a laughing stock of yourself.
As for your friend's opinions, everyone I know, even those with kids at independent schools believes that fee paying schools losing their VAT exempt status, was morally correct as they are businesses NOT charities. I suspect the difference been you and your friend is she may actually understand what this policy is about.
And there is no such thing as "net" tax or a "net" tax payer. What are you actually on about? A person's salary is described as gross before deductions such as tax and NI are made and what is left is the net amount. Hope this helps.
In future engaging the brain before shooting off the mouth is usually a sensible approach I find, oh and also admitting when you're wrong or have misunderstood something rather than digging a deeper hole for yourself.