Schools for expat children in Medellin

Hello to all :)

We'd like you to extend any information you have on the educational system in Medellin.

But of course, we'd like you to mainly talk about international schools (primary, secondary, high school and universities) existing in Medellin for expatriate kids.

Thanks a bunch for your participation!!

There are many schools in Medellin that sell themselves as bilingual but very few that are actually that.
If you can afford it, go with the most upscale one where most of the teachers are native U.S. or Canadians.  That's the Columbus School located in Alto de Las Palmas, just 15-20 minutes away from the Poblado area.
columbus.edu.co/Pages/accred.aspx