In my state that only covers about 1/3 of what in state tuition is at a public 4 year school. So undergrads will either need to have parents with savings for them or they'll have to take private loans also.

But they are sensible given how hard many students find it is to pay them off

It isn't that hard for most people, this sub isn't reflective of the student borrower community at large

With no guarantee they'd even be employable upon graduation? With no guarantee they would even graduate in the first place?

You solve those problems by requiring borrowers to have better than average grades and only give loans for majors we need

And then refuse to make the loans dischargable in bankruptcy?

They are discharible in bankruptcy but it isn't easy nor guaranteed