Median Lifetime Earnings: https://www2.ed.gov/policy/highered/reg/hearulemaking/2011/c...
Cost of School and Lost Earnings vs High School Grad: https://trends.collegeboard.org/sites/default/files/educatio...
BLS on Pay by Education https://www.bls.gov/opub/ted/2015/more-education-still-means...
The National Mortgage Lenders Association defaulted on their mortgage. Many business and corporations, large and small, go bankrupt and discharge debts. Only individual consumers get trapped in non-dischargable debt.
No, the student is supposed to pay back his loan regardless of major.
The reason we have student loans is under the traditional credit system someone without a job and a credit history isn't going to get a loan at all.