Ice Apprentices by Jacob North

Tundra is the last settlement in a world of ice. Oswin Fields is its only stray, rescued from the Endless Expanse. So, when he’s summoned to the school for ice apprentices, he sets out to prove his worth. But all isn’t as it seems in this enchanted place. When the beasts begin to strike, Oswin has to risk everything he holds dear. Can he look deep within himself to find the strength to prove that he belongs?