The text is relatively easy to understand. We have only just finished Module 1, so this is a bit early in the process to be reviewing. But, so far, so good. I think it will prove to be thorough and more than sufficient to meet requirements for a high school biology course.
This product is exactly what a biology book should be! It contains tons of information that traditional biology text do not cover. My child loves the format and the study guides. We are both learning new information! A great buy!!!
We have used Jay Wile's General Science and now Biology. It is such a wonderful curriculum as the text reads like he is talking to you...not just a bunch of boring facts. The General Science makes a distinction between Science, Applied Science and Technology and my son found that very helpful when he learned about different experiments, hypotheses and theories. Fantastic!