There were some parts I really liked and others that I thought were merely okay. I really liked the beginning - seeing the test and how the different children completed the various parts. Other portions of the book seemed to drag and I was wanting there to be more of a pull. For being a middle grade book, this was a little long for me and I felt like there were parts that could have been cut. But the wit, and my curiousness to see how everything ended up, was enough to keep me reading.