"Kate, you got a letter!"
Your mom snapped you out of your phone browsing, and you went downstairs to read the letter. It was a brochure from a high school. "Redlinne Academy".
It was a boarding school, and it allowed application now, and it was free! A great opportunity to get away from your annoying parents! It was the summer after grade 8, so it was a good time to sign up anyway.
You signed it and sent it back, and a brochure came in the mail. It had some lists of stuff to bring, a few waivers you signed without reading, and an... engraved hematite ring. You slipped it onto your finger, wondering why it was there, and packed up for your dorm. After informing your parents, you headed off to high school.
Little did you know, it was a high school and college, and you would be learning how to shapeshift!