If it's a required class - try getting it over with now instead of later when (hopefully) you're in a sorority and busy. Or are you talking about taking it credit/no record? How could you get credit for it if you withdraw? I'm so confused.
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It is all 33girl's fault. ~DrPhil
Good grades are important to getting into a sorority. If you receive a bid, you need to maintain a good GPA or you could be put on a type of academic probation. If you are unable to maintain your grades while you are not in a sorority, you need to consider if you will be able to maintain them if you were to be extended an invitation to join.