@Squall Leonhart,
I don't think there is a stigma, but it can be a little complicated having a relationship with someone in a different stage of their life.
You'll be starting something new, being a little fish in a big pond. She will be a comparatively big fish in a small pond. Studying in college/university is different than going to high school. You'll be meeting new people. She won't have as much of that same opportunity.
There will be adjustments/accommodations you'll both need to make.