If you apply early action to CMU and in common app fill out a specific department (biological sciences for instance) and in your essay write about a specific major offered by that department, are you bound to that department and/or major if you get in? How easy is it to switch departments/majors?
Thanks
At CMU different programs have different levels of selectivity. Changing into computer science would be pretty much impossible, for example, Now if you are admitted as a biology major and want to change to chemistry, that may be easier.
Most of the schools don’t require you to declare a major right away. In that case, then switching majors within a college is easy i.e. Biology, Chemistry, Physics and Mathematics are in Mellon College of Science - you can choose any when you declare your major. Also double majoring in another college is often possible. As is taking classes in a different school - you might get lower priority for registration.