I think the Int'l Ed program at PennGSE is pretty awesome. Yes it's new, but clearly, a lot of thought has gone into the program and the program leadership know what they're doing. The program is small (comparatively speaking) and follows a cohort model. Plus, the internships are FANTASTIC. And, the fact that you can take courses all over Penn is incredible. The annual lecture series brings people from all over the world to Penn; the affiliated faculty draws from all disciplines; and the cohort itself is really tight and amazing (see the tumblr blog for evidence of the cohort's amazingness: http://iedp-penngse.tumblr.com). Couldn't be happier with my decision.