In well-funded fields with lots of jobs (like CS) graduate students often don't have to pay tuition (or heavily subsidized tuition). Everyone I know that got a

In well-funded fields with lots of jobs (like CS) graduate students often don't have to pay tuition (or heavily subsidized tuition). Everyone I know that got a Masters/PhD in CS actually got paid for it (it was like a job at the university, albeit not as well paid as working in tech). Very different in the humanities.