When I was a student we didn't have senior status (and ktkennyd is right - Sigma Kappa doesn't allow seniors to go alum after the first semester.) We did have a system of "privileged absenses" where girls who had accumulated enough priority points (earned through grades, offices held, and campus, community and chapter involvement) were allowed to miss a certain number of minor events each semester. It was usually most of the seniors and sometimes a couple of juniors and they were able to miss informal meetings, social issues programming and other similar things. You couldn't use more than 6 per term and you couldn't use them for ritual, formal chapter, recruitment or anything like that. I always thought that was a good way to do things. By the time we were seniors we didn't really want to sit through another etiquette workshop. I think the year after I graduated we had a chapter consultant put an end to them though - she said it was hazing.