Need help on LO project

Hi, I don't know exactly if this question is appropriate for this site but I am doing some research for a school project and I am kinda struggling with researching the web. I need to know:

1. What do you call someone who works in the film industry who directs, produces, writes and acts? I am looking for the term which someone works in the film industry.

2. What school subjects are required or recommended for this career?

3. What grade 12 marks are required to study for this career?

4. What type of institution do you need to study at to work in this career? For example, college or university?

5. How long is the study course for this career?

Thanks.