I'm at Marshall University in Huntington, WV, and we had low numbers this year too. I didn't go through formal rush last year, but my understanding was that we had about 100 go through last year, compared with about 45 this year. Quota was at 9, and 3 of the sororities got quota.
General opinion is that our low numbers were due to having rush the first weekend of school, while everyone was trying to get settled and sophomores, juniors, and seniors were still trying to move in.
In your case, though, it doesn't sound like your low numbers are from lack of trying....the only thing I can think of is stuffing the mailboxes in the girls' dorms with fliers and rush info.
Good luck with getting more girls!
