The brawniest and brainiest teenagers in the world are sent to SHIELD academy, where they will learn to replace the current generation of SHIELD agents and superheroes. For some people, like Tony Stark, it's just a place to get away from their current living situation, but for others, like T'Challa, Shuri, Loki, and Thor, it is to bring peace to the universe. Everyone is far from peace and as these teens go through drama, depression, and the occasional fistfight, they learn more and more about what a superhero should really be.
Sorry for the inconsistency for how long characters appear for, I guess. Ships are in the tags hon.
You're Tony Starks daughter that he didn't know about. You get into a fight and are sent to live with him, you know very little about him, and he knows very little about you. You are seventeen and graduated high school. You are a genius with an IQ of 187 and can read 20,000 words per minute with an eidetic (photographic) memory. So, you're really smart. You don't get along with Loki, Peter Parker is your best friend, and you love to spar with Bucky and Steve from time to time. The Avengers soon become like your family, and you slowly start to warm up to Tony, as for Loki, the two of you are constantly at each other's throats.