It has been a common practice for decades now for schools to withhold the benefit of attending - official transcript - until all money owed is paid. The transcript or diploma is the collateral they hold to make sure they don't get stiffed.
The traditional college transcript is particularly unsuited for this task. It lists the courses completed and how people performed. But it says little about what someone actually learned or what a person knows.
Somewhere in the middle of Stewart's monologue, he started to at last expand upon the "sanity" theme in a way he couldn't manage with the comedy, pushing a call for something much more meaningful: decency.
Her performance was so strong and so well focused that it would be foolish not to immediately send her out on the campaign trail and/or to as many television interviews as she can squeeze into her schedule.