Sir Edward Coke's soldiers here at Ohio State completely understand your problem. We were a small chapter from 1902 until about 6 years ago, now we are the largest fraternity at OSU! And although we have gained MUCH respect and party with all the big houses now, there are still 1 or 2 sororities that even though they'll schedule social events with us like to only party with 1 or 2 select fraternities. I think they just have a complex passed down from their older sisters about who is historically prestigious and not who realistically is better (sports, grades, fun). We just get involved in everything we can to make our name that much better. That's how we grew to be the best!