Why is it that no one can pledge at 2 year colleges?

[LaJasmine]

ONLY SERIOUS INTELLIGENT REPLIES PLEASE***

I currently attend a 2 year techincal college with a major in nursing. I am very interested in Sigma Gamma Rho Sorority and they require you, as other GLO's, to be in attendance or have graduated from a 4 year college. Why is that? Do you feel that individuals who attend 4 year schools are better than most? Do you feel that those are the only people who may participate in community service? Do you feel that people who attend 4 year schools are richer than those who attend 2 year schools therefore will be able to pay dues, etc. I don't understand why we can't be invited to join when we are smart, participate in numerous community service events, have high moral standards,etc. but because we attend/graduated from a 2 year institute we are deprived the possibility of joining one of the fine glo's out there.