upperclassmen?

The only sororities I know for sure don't take upperclassman are sdt and aphi (maybe adpi and dz but not sure). Any solid middle-lower tier would take an upperclassman if she fits the bill

No sure if fraternities have a campus membership ceiling, but the sororities do...so if they are limited, they want to try and take the girls who will be around the longest.

I don't think the situation for sophomores is bad here compared to other schools. Juniors might be tougher, but as long as it was a solid candidate with a good rep, good grades, they'd probably stand a chance with maybe half the houses on campus. More than a few sororities took juniors over the past year, in both formal and informal recruitment.