What job can an 18 year old work at that would be able to pay his tuition at the same time as going to school? None. Tuition is at least $18k/yr. To pay that off and other living expenses, the person would have to work a 40K with a high school degree. That doesn't exist in this world for young people.
Also, these students were told this degree would get them a job in their field. They manipulated the job numbers to say "Hey, you will get a job when you graduate!" Which weren't true. These schools broke the law, that's why they are trying to get their loan forgiven.
I didn't say they have to work for all the money. I ended up with $4K in debt. I worked odd jobs for $10 an hour in the eighties doing painting, yard work, etc. I also worked nights as a network operator. I had to be there 4 hours a night. I didn't have to work unless the network is down, they were fine with me doing homework. Summer, winter, spring break I worked full time plus.
I worked at working at it. That's what it takes.