Considering the utterly ramshackle state of the public school system in the United States, The Manga Guides could prove to be a worthy upgrade to the boring texts our children are given. I find that highly unlikely however, in light of the de facto monopoly a few publishers have on the market.
For home schooling, The Manga Guides would be perfect. Parents might also consider them as an addendum to whatever 40-year old Scholastic textbook your young one is forced to study out of.
Besides the three Manga Guides I have mentioned No Starch Press offers a number of others as well. One of the most basic keys to learning is being open to the information being presented. The Manga Guides are an innovative way to make that happen for the student.