Rosma,
I think people are right when they say it depends on the school. I think some colleges only go for freshman and sophomores because they have 3+ years left.
Personally I think that is too bad because if you're a junior or senior, you can still add a lot to an organization as anactive and an alumni.
I personally didn't go through pledging until my senior year. I tried it my sophomore year, but wasn't happy with sorority XYZ, so I dropped from pleddging. So I tried again my senior year and ended up with my sorority Kappa Gamma Chi. There were actually 3 of us seniors in that class and we added so much in that one year
And they didn't take us just for #s btw. We were the strongest and largest sorority on campus at that time and still are (Yes, I'm tooting the horn here
)
So if you want to try it then do it. I never think it is too late. However keep in mind how the Greek system works on your campus and how realistic your chances truly are.
Good luck, I hope you go for it.