Media Arts/Set/Production Design Help! (Questions)

Hey guys
I’m an upcoming junior in NJ and I recently chose what I want to be in the future.
I was always interested in set/production design and musicals/ films/ TV shows. (Currently, I’m a set designer/stage manager for the school musical.) I found out few weeks ago that there’s a major for set designing in colleges…so I have a lot of questions for any college students majoring in this area!
Questions:

  1. Do I have to take any SAT 2s for this major? What kind of AP classes should i take in senior year? (I’m taking AP chem in junior year)
  2. When should i start preparing for the portfolios? (I’ve been doing competitions and taking art classes out of school)
  3. Which colleges have this major? Do art colleges have this major?
  4. Are there any volunteers related to this major? Any high school internships or summer camps?
  5. Are there any art jobs relating to theatre? What does an art director do?