Tertiary education

http://www.dartmouth.edu/~pmaweb/BEJEAP.pdf

https://scholarworks.uvm.edu/hcoltheses/262/

https://www.thecollegefix.com/as-women-outnumber-men-in-higher-ed-campus-mental-health-has-never-been-worse/

https://freopp.org/is-college-worth-it-a-comprehensive-return-on-investment-analysis-1b2ad17f84c8

https://archive.is/qnoxn

In 2021 Department of Education said they do not have an effort underway to explain what is going on

https://usatoday.com/story/opinion/todaysdebate/2021/09/15/college-fewer-men-hurts-america/8278887002

While men do experience discrimination at university I don't believe that is the principal reason for this trend. I think men have largely abandoned university, partly because degrees have become more expensive and less useful and partly because men are generally disengaging.