Training opportunities?

Hey, I have an interview at a nursing school on Monday.

Here's a brief background: I'd like to go after 9th grade because I'm having some problems at school (not because of my grades). My teachers are definitely okay with it, but I would have to do an apprenticeship afterward. I've already asked the housing foundation where I'd like to do my apprenticeship about this. Unfortunately, that's not an option because I'd start training at 15. That's why I've written to a nursing school. The secretary said it's possible, but recommends completing another course of study beforehand or going there for an interview. Do you think that will work, since I'm only 15? I'm really scared because the interview will decide my future.