I really want to work for NASA, however, I am struggling in school. How can I make it to where you are?

In school,  you focus on various subjects that may or may not be of interest to you,  so that in itself can make it difficult for you to excel. However,  if you redirect your focus to your dream career,  or your goal, instead of the interest in the class itself, you will see different results.  School prepares you to learn fundamentals of subjects, but most importantly how to think critically.  With a strong work ethic, determination,  focus and teachability, you can still be a very strong candidate for NASA or anywhere else you desire.