Some schools allow you to skip an entire year of college if you graduate high school with the IB diploma. I’d say that says more about the college than about the IB program though. Any school that considers a senior year of high school to be the equivalent of their first year of college does not expect much from its first year students. And if you review the schools that give a year of credit for an IB program I bet you’d find that many have difficulty filling their seats or their claim to fame is efficiency rather than academic excellence (or they require a 6 or 7 on exams-which is earned by only about 30%, depending upon topic. About 60% of the exams have grades of 5,6,or 7; A '5" is a very low standard for considering a high school class to be the equivalent of a college class).