Books like Horrible Harry Moves up to the Third Grade

I remember when I was a kid, my parents bought me the Horrible Harry books from a Scholastic book order, and I remember getting this book when I started third grade. It's one of the books that had stuck with me when I was a kid, I loved them so much, not as much as R.L. Stine, but they're up there in my fond childhood memories. Anyway, I thought this one was interesting. It seems like these kids learn about something cool every book that I pick up. You learn a few little facts, and it makes you want to know more about the things they were studying, which is great for kids who ask a lot of questions and find an interest in everything. I love the friendship between Doug and Harry; I think it's great how they don't judge each other and are there to support one another no matter what the situation is, even the embarrassing ones. A side note--this is the second time Sidney went missing for a short period, I think they need to watch that kid like a hawk!