I don't think anyone can argue we don't pay enough tax to fund education, the funding has been cut in real terms because the government does not prioritise it. They prioritise billions on air strikes, illegal wars, propping up the failing criminal justice system, pay outs to banks, selling off public assets for far less than they're worth, and above all... Making profits for themselves and their mates. They could be chasing down high value tax evasion to raise money. They could be abandoning fracking to save money. They could be abandoning failed attempts to salvage nuclear plants to save money. Managing the rail system better (they quickly sold off the only truly public line left when it was clear it was much more efficient than the privately owned). Managing the post offices better. Deducting salary from MPs and MEPs who do not turn up to debates or meetings.
Just generally not being complete arseholes with mine and your fucking tax money that should be spent on the education, social care, and health of the population.