" Too many people are going to college," writes my American Enterprise Institute colleague Charles Murray. That's not a response to the mob of students that attacked him and the liberal professor who had invited him to speak back in March at Middlebury College. It's the title of the third chapter in his 2008 book Real Education: Four Simple Truths for Bringing America's Schools Back to Reality.

Since Murray wrote those words, higher-education enrollment has in fact declined, from 20.6 million in 2011 to 19 million in 2006, according to Ohio University economists Richard Vedder and Justin Stehle writing in the Wall Street Journal. That 8 percent drop is concentrated in community colleges and for-profit schools.

But enrollment has been no better than flat at large four-year universities, and law school enrollment plunged 31 percent from 2010 to 2015. And freshman enrollment at the University of Missouri fell 35 percent since the riots in which a faculty member called for "muscle" against a student journalist and administrators caved in to rioters' demands.

One reason for the flight, Vedder and Stehle argue, is that the costs of higher education keep rising while the returns for a college diploma are getting worse. Tuitions and fees rose 74 percent, adjusted for inflation, from 2000 to 2016, while the earnings differential between high school and college graduates fell 10 percent.

For years, policymakers subsidized higher education, like homeownership, because they noticed that college graduates and homeowners earned more and had stronger community ties than others. The thinking was: More subsidies would produce more of both.

Instead, oversubsidization led to a housing bubble that burst, and it seems to be leading now to what Tennessee law professor Glenn Reynolds (instapundit.com) identifies as the bursting of the higher-education bubble. The intended beneficiaries were left worse off after foreclosures, and the same may prove true for those with student loan debt (higher today nationwide than credit card debt).

It certainly looks like federal aid and student loan and grant money have been vacuumed up by colleges and universities, which nationwide now employ more administrators than teachers. And this administrative bloat has had additional malign effects.

College and university administrators have done more to encourage and little to nothing to discourage campus violence — the attacks on Murray at Middlebury, riots to bar Ann Coulter from Berkeley and Heather Mac Donald from Claremont, the orgy to punish Bret Weinstein from refusing to stay off campus on "no whites" day at Evergreen State.

Administrators gleefully accepted the Obama Education Department's "guidance" to set up kangaroo courts to deny accused students legal representation, knowledge of charges against them and right not to testify against themselves — all to combat a bogus crisis of campus rapes based on "fake news" statistics. This persecution is documented in detail by KC Johnson and Stuart Taylor in the recent book The Campus Rape Frenzy.

Administrators have also defended restrictive speech codes, which have made our campuses the part of America least open to free expression, against attacks from the indefatigable Foundation for Individual Rights in Education.

Young people planning their futures might be wise to hesitate to commit their time and money to institutions run by the people committing these anti-intellectual outrages. And they have reason to suspect they don't offer much in the way of serious education.

The long march of the Sixties generation has politicized disciplines from English to anthropology. University faculties, which range from the merely liberal to revolutionary-leftists — some diversity there! — ensure that many classes are limited to mind-deadening denunciations of dead white males. Students interested in Shakespeare or American constitutional history need not apply.

Ethnic and women's studies departments have produced, here and there, some worthy scholarship, but a lot more mindless agitprop. Thousands of Ph.D. theses are submitted each year in incomprehensible politically correct jargon, to be unread by anyone except writer and adviser. Or perhaps to be published in the plethora of similarly unread journals, whose peer review process is not necessarily as rigorous as you think. One of these published an obvious spoof article submitted in jest, which was titled "The Conceptual Penis as Social Construct." This piece of anything-but-scholarship went right through without anyone noticing it was a joke. It argues that penises are "best understood as an enacted social construct that is both damaging and problematic for society and future generations."

In Real Education, Charles Murray argued that too many people go to college. Nine years later, it seems that more and more young people are concluding that American higher education and its administrative bloat are not worth their time and money. They may well be right.