Absolutely.
Our mission is also to equip schools in teaching such subjects through the methodology known as the Trivium (grammar, logic, and rhetoric), the educational foundation of our Western culture.This is the single best book that I've found on the subject. It's worth more than an entire, typical high school education.
We started our kids in a Classical School in kindergarten and they continued through the 3rd and 4th grades, but because of a change in jobs, we had to move. We still have them in a private school, but I wish I could manage to get them educated in the classical manner. I have a 5 year old son that won't get the same quality of education, but I'm hopeful that his sisters and mother can help him using classical methods.
Anyway, thanks for the lead on the book!