I have always enjoyed the Apologia science curriculum. This one, however, I found disappointing in that I bought it for a high school science course. It seem to be more the more on the level of a junior high/ middle school course rather than high school, so I had to get something else. I would recommend this for the lower grades, just not as a high school course.
The Apologia science curriculum is the best I have found for sound science information in a biblical world view, and the high school sciences are a superior preparation for more difficult college science classes.
This is a book that is necessary with the Apologia Physics book for high school. It contains answers to all questions in the book as well as an extra consumable test packet. Good price. Delivery was done quickly and within their guidelines.