I think this book does a wonderful job taking readers through biological, cognitive, and relationship changes during adolescence. I was really impressed by the inclusion of the latest research modifying Piaget's theories. I agree with other users saying this book was repetitive, but sometimes the repetition was the topic as viewed from different perspectives (ex: Baumrind's authoritative parenting and how it applies to education-teaching, education-administrative policies, education-poverty-stricken neighborhoods, education-self esteem issues, education-hormonal changes, etc.).
I would have given it four stars, except that the author tends to loose objectivity when discussing hot-button topics such as homosexuality, abortion, and contraception. Otherwise, a very enjoyable book!