Learn English – What does mean “pot commited”

To understand the term "pot committed" requires an understanding of poker terms in general.

Here is one definition:

A player is pot committed or committed if he has already invested so many chips in the pot that he can no longer fold if he is raised all-in.

The linked site allows you to click on individual terms to know what they mean. For example:

The pot is the prize pool consisting of all the bets made in a hand.

and:

A player who folds lays down his cards and withdraws from the current round of play. The bets he's already made stay in the pot and he re-joins the game in the next round.

All-in means:

to bet all the chips one has at the table. Once a player is all-in, [...] he can no longer make any more wagers or call any more bets [and] cannot be forced to fold.

So, as far as I understand it, pot committed means that somebody can, because of how much they have in the pot, be forced to bet everything they have remaining, and thereafter they have to play to the end, at a risk of losing everything.

If a law grad loses their scholarships, they can be forced into a difficult situation: they have invested a lot of time/money/effort such that they do not want to quit, yet they may not be able to afford to continue. They are stuck having to keep "playing", but with the risk of ending up with nothing.