My school has AP courses and IB courses. AP is advanced placement (I think) and IB is International Baceloriate (sp?). The IB Program has a whole list of thing you have to do to get the diploma, for example community service, building a website, writing an extended essay and so forth. You have to take a lot of extra tests too and it comes with a pricetag. I don't know why my sister did it, it's a lot of work for a diploma that wasn't highly regarded by colleges, according to her.