I think the following is a good place to start:
-a Golden Age uptempo and ballad
-a contemporary uptempo and ballad (around 1970-2010)
-an appropriate role from a show that has been on Broadway in the last five years
-a comedic song
-a pop/rock/country song
This is not a definitive list and it is not required at any school I know of. I just think it covers all the bases and provides plenty of options for the panel. It also gives the student a great opportunity to learn rep from these periods and explore different shows. If you don’t have any of these pieces or they don’t fit your voice, that’s okay. Just do what you do best and try not to have more than two of the same kind - for instance four Golden Age ballads.
~VT