Your senior year schedule would only be a small part of your academic qualifications. Your GPA, overall strength of your schedule and performance on the ACT or SAT are important factors, as well as your intended college major. In addition, the NROTC board is looking for a well-rounded applicant. They are looking for the Scholar, Athlete, Leader. Your qualifications in each of these areas is important. If one area is a bit weak, it could be compensated for by extra qualifications in another area. Your performance on the officer interview is important as well. Taking all that into account though, no one can tell you if your qualifications are "good enough" to receive a scholarship. People can give general advice as to where you appear strong or where you could try to improve. Many well-qualified applicants will not receive a scholarship and you may see someone who receives a scholarship with qualifications you perceive as not as strong as your own. Just keep in mind there was something in that person's overall package that led the board to believe they were deserving of a scholarship and had excellent potential to be a naval officer.