Private elite institutions (Yvies) offer excellent education, and networking with really rich people ;). Some people already had that, some will make economic use of it, and some not. I assume the variance within-group is very very high, so you can probably calculate stats to defend any point. And then the cost also varies, so ...

'Elite' state schools (GA Tech, Michigan State? Etc) probably have excellent ROI.

Expensive, not really elite schools are probably not worth it on average, but again, cost varies highly, so ...