they don't pay the grad student $46k a year. they pay them $24k a year (or more likely $20k for 9 months), and then the university makes up a number for "tuitio

they don't pay the grad student $46k a year. they pay them $24k a year (or more likely $20k for 9 months), and then the university makes up a number for "tuition" and takes an extra $15k arbitrarily.