11.
Q: Do you need to study a specific branch to be a casting director?
A: No, not necessarily! No specific branch, but in school, when you’re working on a bunch of projects, you get to know other people who are hoping to be producers or directors. If you stay friends, and they know you like casting, they might try to put you on their casting team.
I would look into casting companies as well as production companies themselves and their casting departments. Additionally, you could find interesting people and make a sizzle starring the cast you’ve found and try to sell that show.