The negative association between intellectal knowledge of students and Money spent on schools.

http://www.huppi.com/kangaroo/L-edumoney.htm
Richard Rothstein-huppi.com

It is deduced that most of the increased money spent on "education" is not going toward things that will benefit the students' academics but rather things that are indirect. Some spending includes building new builings and providing special programs for a few which don't help the students much intelectually and drain resources. Teaching can be done without spending money on those things and the spending on schools is not showing signs of working since the money isn't directly connected to learning. Money spent on better teachers, textbooks, and education would work but they aren't funded well enough.