What do we see? Schools turning out ill-educated, ill-behaved students. The public is shocked and dismayed. The schools then approach the public and say, "If only we had new buildings, more staff, larger budgets! Then we could really do a fantastic job!"
As an extortion racket, this has worked pretty well. With the schools in perpetual "crisis", the public tends to throw lots of money at the "problem".
There is very little incentive for schools to do a good job.