College Piano Audition Repertoire?

The prelude and fugue is good, as is the Chopin. The Moonlight sonata could be good, if you make sure that the third movement is in top shape, since that is the most challenging movement from a technical point of view (the faculty may ask to hear it just for that). I would suggest that over the Haydn, but if you have time I might even suggest looking at a different Beethoven sonata, since many of Beethoven's sonatas are more substantial than the sonatas by Haydn and Mozart -- ask your teacher what he/she would suggest. As for the contemporary piece, I would call or email to ask for specifications, if it's not on the website -- often the colleges say after what year the piece must have been composed for it to count as "contemporary," and I know that sometimes anything in the 20th century counts. I would advise against Corea or Joplin, since these composers wrote in a different style than the faculty will be looking for. Depending on what the answer is about the year, I would suggest Prokofiev, Bartok, Ginastera or possibly even Ravel. Also see the list that was posted in the other comment. I can also remember someone playing Liebermann's "Gargoyles." Hope this helps! I'm sure your teacher will have plenty of guidance to offer as well.