Originally Posted by FLCock89
The current system is a "bid" type system. Before the season, cities/schools can place a bid to host a regional and 16 are given out. Many times you will see schools that know they have legitimate chances of making the tournament place a bid to host hoping to gain a home court advantage in the tournament. One of the most extreme recent examples I can remember was #1 seed Stanford playing #16 seed Hampton in Hampton, VA a couple years back in the first round.
Even if the host school doesn't make the tournament, they will still be a host. So in your example, even if Purdue tanked to end the season and missed the tourney, West Lafayette would still host a regional. Because these sites are based on bids and not merit, South Carolina is ineligible to host based on the flag rule.
But as Luke said, they're getting rid of this system soon. Until then, our best hope is to get placed into a regional that is completely neutral court so we don't get a home court disadvantage against a lower seed.
It's ridiculous if you can't have the higher seeds playing in their own buildings than you don't need to put ANY teams in their own buildings. Why they heck should Purdue be rewarded like that?