According to everything I have read (in the news sources), the Heene children are not homeschooled.
http://www.google.com/hostednews/ap/article/ALeqM5ie0x4tv2tFVwxzfVpFiJG47OvbgwD9BBQM3O3
http://www.denverpost.com/frontpage/ci_13573127
The Poudre School District in Fort Collins, where the boys attend, did not have classes for elementary schools Thursday because of a teacher work day.
http://www.google.com/hostednews/ap/article/ALeqM5ie0x4tv2tFVwxzfVpFiJG47OvbgwD9BBQM3O3
The boys — F., 6; R., 8; and B., 10 — are students at Werner Elementary School in the Poudre School District, which had a teacher work day Thursday.
http://www.denverpost.com/frontpage/ci_13573127