From a few years ago when my D was there, I was told:
35 - 37 offers to yield
20ish spots for VP Freshmen (male and female)
This is the time when the mind wanders to NUMBERS that are just plain frightening! But every year lots of kids get offers. I always say…if you have an audition, you got a good shot. Take it…and don’t worry about the numbers. Note that there will be kids that are disorganized, not prepared, sloppy or plain don’t show up (my D’s audition was moved forward due to cancellations). If you can show up with clean clothes on, your shirt tucked in, your music super organized, and then walk in the room with confidence…you may knock out a part of the competition before you even sing. Then sing well and be responsive to the panel. They do NOT expect perfection…they are mainly looking for potential.
Good luck!