Depends on the school and depends on if this is for med school or undergrad. For undergrad, yes, always put your parents financial info down, I know of people whose parents made far more then yours did and still got a lot in financial aid grants in med school and of course, much more in college. For med school, some med schools don't care about your parents financial situation because they will count you as an idependent, unless they made <50,000, in which case you might qualify for some special loans or grants, but a lot of med schools particularly private, expensive ones want your parents financial info so that they can calculate an estimated parental contribution and deduct that from whatever your financial aid package would be. If you don't turn it in for these schools, they will assume that your parents are millionaires and will be paying for your education in cash or else you will have to use high interest loans to pay for school if your parents are not actually millionaires or your parents aren't going to be paying anything. Either way, 100,000 parental income shouldn't be too high to exclude you from getting any institutional aid. Bottom line: talk to your school's financial aid office. If you are waiting or deciding between several schools, then yes, turn in your parents financial info ASAP.