The Bible is a good example of a book that has been changed for its audience. They also make changes to books to update language.

They make modern versions of the Canterbury Tales https://www.amazon.com/Canterbury-Tales-Version-English-Clas...

It's decently hard to find examples due to the discussion of Roald Dahls work. I just seriously doubt Scholastic is doing this for any other reason than making sure their books are never found to be objectionable.