==giving more money to an underperforming school only makes it worse.==

Is there no circumstance where more funding would help an underperforming school? It certainly “can” make it worse in instances, but there are many reasons that a school might be underperforming. To imply that more resources would fail to help any of those problems is quite a leap.

What if the student-teacher ration is 40-1 and more funds allows for another teacher, might that make the school better?

What if the school is only open for 4 days due to low funding, might an additional day of school make it perform better?

What if a school has multiple disabled students slowing down the curriculum, but no funds to give them personal support, might more funds help it perform better?