I just discovered a Nicholas D. Kristof recent New York Times column in which he made his suggestions for kid's summer reading. He has some great suggestions so take a look at this article.
From there you can link to his blog and offer your own suggestions.
The good news is that while I might not of selected exactly the same dozen books, I have no argument with any of the suggestions. Needless to say, there are myriad other books that are well worth reading.