Are you thinki to just to more chapters or a series of Ether Acadamy Books? Personally I think a series of books would be better for what I mean thinking.

I read this book series a while ago Called Spirit Animals. I think you could do the series like that where you gather a team of them like Evelyn, Tara, Cain, and whoever else and they go looking for people with powers but there are a society of people’s who use their powers for evil and they also try to get these children, all in all their goal to be to gather kids with specific powers to combine them and unlock a magic prison that he was put there by possibly the principal and wants to defeat the school. Just a thought.