the cutoff for federal loans is around $140,000, but if the cost of tuition keeps rising like this, the're going to have to up it.
(edited cause it used to be $120k but apparently they've upped it to $140k. this is only for grad and prof degrees...for undergrad it's $31k for dependents and $57k for independent students.)
http://studentaid.ed.gov/PORTALSWebA...udentloans.jsp