By this time of year, college-bound high school seniors are usually celebrating their choices, researching dorms and even thinking of their majors. This year, that’s not necessarily the case.

Because of a disastrous rollout of the new application for federal tuition aid, many still don’t know how much tuition they would be paying and so have not decided where they can afford to go.

The Education Department’s redesigned form for the Free Application for Federal Student Aid, or FAFSA, was…