<p>^Would say both, to be honest. Tons of people rush in the fall to meet people, even if they won’t join a Greek org. Others rush in the fall but can’t pledge in the fall (family, personal, whatever reasons), so they wait until spring or until fall of sophomore year. Then you have the “normal” people, who rush and pledge in the fall. </p>
<p>Spring gets a mix of transfers, people who couldn’t/didn’t pledge in the fall, people who de-pledged another organization in the fall, people who didn’t consider it in the fall, etc.</p>