Joyfulbugg--
Many sororities and their chapters have different policies regarding one's class status when rushing. I believe that there's no harm in rushing and by doing so you can get a better feeling of what your options are.
Perhaps this thread can be useful to you:
Rush as a "Second Semester Sophomore"
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"Stress is toxic. It's a poison that makes me wanna throw up."--Me, on the aftermath of the UHPA Professors' strike
Visit Alpha Gamma Delta-Delta Sigma chapter and
help some sisters out!