@nycparent12 My D’s adviser has already marked up all the major course requirement for the future semesters till she graduate. She still has room to fill in any electives she wants. Some of the ChemE courses only offer in Fall or Winter but not both, are need to be taken in specific sequence. So it is very critical to lay out and follow the schedule as soon as possible. Even the school list out the course sequence and pre-requisite requirement, you may need to find out if the course is offered in both semesters ahead of time. Otherwise, missing one class may lead to a whole year delay in graduation. This is particularly common for those who declare major late (i.e. after the first semester of sophomore).