"I didn't say per Capita" bro that's exactly what you should expect of aid. No one is expecting idk, Lesotho to name some random small nation to give billions and billions in aid.
Per capita and percentage of sovereign wealth are the two main metrics people would judge off, not total amounts.
Parents are essential for student growth and education but that doesn't make them responsible for all of it. The entire point of school is to take on the the major burden of teaching kids with expertise and efficiency and providing a place for children to be with other children.