The narrative being that men are not attending college because they're failing is non-sense IMHO.
Young men in the US are avoiding college because it has turned from being a surefire way to score a degree, a job for live, enough income to build and support a family and - most importantly - score a mate for life to do exactly that, into the worst deal in the history of ever.
As every hetero-male who hasn't been sleeping under a rock the last 3 decades knows, the deal of scoring a monogamous relationship via a corporate career via a college degree is firmly off the table.
In a time where mating has become a live mine-field for young heterosexual men, there is very little incentive for men to break their back or join the rat-race. Men aren't avoiding marriage, they are avoiding divorce and getting shafted by society.
That young men are checking out is by and large a healthy natural reaction. There's even a feminist book on this topic, "Men on Strike" it's called, and it's been around for more than 10 years IIRC.