Answer: Oh, I love the Harry Potter series!
The Hunger Games series!
The Forgetting, and The Knowing: A two book series about a small civilization of people who forget everything every few years, and they have to keep a journal/diary on them at all times so that when the forgetting comes, they can read it and remember who they are. There's a little romance to it. It's way better than I explained it. The main character, Nadia, is the dyer's daughter and she has a secret that she hasn't told anyone (it get's really good). I've only read the first book so far. I guess the knowing is about different characters... I'm not sure.
The Outsiders
The Farm Mystery Series: I have not read this but I've been thinking about it.
Cooper Kids Adventure Series
I hope you find this helpful! xD :'D