Call the office and ask to speak to either one of them, then explain your situation to them. It is really up to you to sell yourself and for them to feel that you will be a value add to the school. You can ask your parents to go along if you need the support. It works either way.
What about your old coach? Can you ask him for a recommendation?
The important thing is to not give up on your studies in your existing school. It will make your transition alot easier. It will be a waste if you get your transfer only to fail in your new school.