As a former IB student. If she wants to do IB then let her do it but don't pressure her to change. How old is she like 15-that is too young to be planning your medical career in my opinion. I enjoyed the classes because they were interesting and challenging but the stress was overwhelming. I don't think it is worth it just to skip a couple of courses in college if that is your only motivation. If the teachers are better than that is another story - Let her be a happy normal teenager...this whole medical process is hard enough without having that imense pressure in high school.