I graduated from high school a year early and went to the University of Northern Colorado to get a degree in directing. There were both pluses and minuses. It was hard personally to graduate before all of my friends (many of whom I had gone to school with since kindergarten), but the trade off of going to a school where I could take classes that were really interesting, and where no one knew me and I wasn't in the shadow of an academically successful older sibling made a huge difference in my confidence.
Professionally it was both good and bad. I was working while many of my friends were still in school, so I was able to get a lot of experience early on, however, it meant that I was frequently the youngest person on a SM team. I had to work extra hard to be respected (particularly with older stage hands), and it took a long time for me to be comfortable supervising people who where sometimes three times my age.
Overall, it was one of the best decisions that I have ever made for myself, but it was an intensely personal and tough choice. (It did involve petitioning the school board, so if you decide to do it, start early to make sure all the ducks are in a row).
Ultimately, only you will be able to decide if it is right for you. If you have specific questions, please feel free to PM me. Good luck!!