Great idea and story. Mull is a talented author and enjoyable for all ages. I had two minor quibbles wiith the book-Jason was far more mature than any modern thirteen year old boy,which made certain plot points implausible. This would only be glaring to an adult reader though,and I admire Mull's focus on having admirable main characters a kid could look up to. On a side note,I was homeschooled,and I never got to do anything Rachel did (except skip grades and do school year round). Not fair.