A book for 6th or 7th graders

If there was 6th or 7th graders who want a book that's realistic fiction, pretty short and not so difficult, I would reccomend "How to eat Fried Worms". The book is preety interesting and it's not too short and it's easy to understand. Many people have seen the movie but when you read the book, it's in more details and it has a bit of a different storyline. I had read the book in 6th grade as a class.