Does having a college degree guarantee that you can write a coherent, well-developed, logical and grammatical ten-page essay? Certainly not. Isn't that a high school skill, anyway (see No One Wants to Teach Writing - At Brooklyn College, professors pass the buck rather than take responsibility for students' writing)?
In the WSJ, We Pretend to Teach, They Pretend to Learn - At colleges today, all parties are strongly incentivized to maintain low standards. (paywall)
Is he exaggerating? Or are they mostly diploma mills, rent-seekers, needing the income? Remember the bumpersticker: "If all else fails, lower your standards" ?
There's only one way to find out: Post-College Exams:
"Right now a student graduating from, say, California State University at Fresno, Kansas State University, or the State University of New York at Brockport with a 3.3 average has a tough time getting considered for a good job. These schools, while by no means considered academic disasters or diploma mills, accept kids that were mostly above average but not exceptionally good high school students. A 3.3 average once denoted "a well above average student" but does not anymore in this era of grade inflation. In short, absent more information, this hypothetical student would be considered "a so-so student from a so-so university," perhaps not worth employers investing human resource department dollars to carefully assess and interview.
Enter the CLA + and the new Gallup-Purdue Index. Our hypothetical student can take the CLA+ and employers can see quickly and inexpensively how he or she fares relative to, say, a 3.1 student graduating from the University of Virginia, UCLA, or Swarthmore College, far more selective institutions. On the basis of those test results, some of the students at the less selective universities will manage to get interviews and serious consideration by employers."
I think much of this is related to my post of a few months ago: "Unprepared" for college study
How About Post-College Exams?