This is a two book set that includes both the student textbook and the Solutions and Test Manual. This is an advanced biology course. Combined with Exploring Creation With Biology, it gives the student the equivalent of a university biology course. In other words, these two courses together cover the entire "advanced placement" (AP) curriculum. In order to take this course, the student MUST have completed a first-year biology course AND a first-year chemistry course. It covers both the anatomy and the physiology of the human body’s 11 organ systems in detail. From Apologia.