Zodiac Academy 1: The Awakening by Caroline Peckham

You have been selected to attend Zodiac Academy, where your star sign defines your destiny.

If you're one of the Fae, elemental magic is in your blood. And apparently, it's in ours. As twins born in the month of Gemini, we're a rare breed even in this academy of supernatural a-holes.

Changelings were outlawed hundreds of years ago but I guess our birth parents didn't get the memo. Which means we're totally unprepared for the ruthless world of Fae.

Air. Fire. Water. Earth.

No one has ever harnessed all four of them, until we arrived. And it hasn't made us any friends so far.