I think I know the answer, but let me paint you a picture anyway.
The sorority house total is 50. ABC & HIJ are all there. XYZ is coming in at 47. The biggest formal rush in a while happens with approximately 80 women going through. Quota is set at 25 for each house. When all is said and done, ABC receives 21 women, HIJ receives 25, and XYZ gets 26. When I asked a member of XYZ to tell me how they could get 26, she said, "well, we matched 24, but we were allowed to take 2 more because they were legacies." What??!!!
XYZ was at 47 (3 under total). Even with 24 girls, they would have met total. (No, total has not been raised at any point in this story. ) Also, there were girls who did not get a bid anywhere, so it wasn't like they were trying to find a home for everyone.
Thoughts....comments....?