got this book for my son to summer pre-read for his 10th grade level enriched biology class this school year. it is clear, well organized and easy to read. it is a widely used textbook across the country, however the level of this book is middle school at best. for his first few tests we told my son to read his textbook chapters several times, he had the chapters memorized but still did not do as well as he wouldve hoped on his tests. upon examining the book more closely, we found his classroom notes and teaching to go into much more detail and to work on a higher level than this textbook. disappointing that this is the level of scholarship being expected in schools across the country, and indicative of a greater problem in our educational system. we're lucky that he has an excellent teacher who wants to teach beyond the book and who holds her students to much higher expectations. i would say use this book as a guide but don't expect great things.