Submit shareholder proposals. Nominate new directors. Attend annual meetings to ask questions of the executives and board members. But do not sell the stock that gives you the right to engage on the issues you care about with the people who can make a difference.
I just finished a fascinating book written by Richard Soghoian called Mind the Gap. Soghoian is the highly respected Headmaster at CGPS, an institution which he more or less single-handedly pulled out of near receivership and returned to its former glory.
I refuse to see one more hardworking student let down by the arrogance of an administrator metaphorically patting them on the head, saying, "This is none of your business." Confronting power in higher education and not taking no for an answer remains, by far, the most successful strategy.
We need more articles to analyze whether growing endowments yield better educational results. College endowments are simply not hedge funds where the only thing that matters is quarterly or annual returns.