Comment by wnissen

If you look at how most professors and adjuncts are rewarded and paid, it makes sense. You can't get quality instruction from a adjunct who is only a half-step away from sleeping in their car, especially when they know they might be gone mid-semester due to a budget cut. Even the full professors are trying to bring in enough grants, oversee enough RAs and TAs to do the work for the grants, get some of their own research done, and barely have time to teach. Teachers in high school have a high teaching load relative to colleges and universities, but they are doing a job and generally are paid at least middle class wages.