It is possible to find data on CS major average salary by school. For whatever measure of CS graduate quality you use, much of the difference across schools is

It is possible to find data on CS major average salary by school. For whatever measure of CS graduate quality you use, much of the difference across schools is probably due to differences in selectivity rather than teaching quality. I live in Massachusetts, and I am confident that MIT CS graduates are on average better than CS graduates of UMass Amherst (the state flagship university), who are on average better than CS grads of UMass Dartmouth (a less selective state university). That does not mean the teaching is better -- and probably what is taught should differ based on the average ability of students.