Back in the day (mid-1990's) we typically had:
- 175 or so women start rush
- about 150 attending pref
- quota was usually around 30
- about 130 women received bids
- 5 NPC sororities
- Usually 3 sororities made quota, 1 would miss by 1 or 2, 1 would miss by a lot.
Rush was held in August.
My school has since gone to deferred rush, and while I don't have the exact numbers, numbers have dropped considerably.