You don't need an academy to teach you how to plant or plan a garden. Does your academy or your neighborhood have a library?
This site can give you a lot of information.
Our Vegetable Gardening for Beginners Guide summarizes how to start a vegetable garden from scratch, easy vegetables to grow, and when to plant what. Plus, we’ve just added a great “starter” garden plan for beginners!
www.almanac.com
You would benefit from learning as much as you can before the academy starts the actual gardening program.
What about cooking simple meals? Will your dad help you learn the basics of food preparation?