Yessica K.’s Answer
If you want to coach a team professionally, I recommend doing some research on schools that focus on a particular sport. For instance, there is a university in Colorado that focuses on preparing young adults to become Soccer managers. It is a very competitive program that only accepts 50 students every year. There are other programs around the nation and if you search for the particular sport that you are interested in coaching, you will find the right school for you.
Best of luck!