homeschool and government

Yes: if it's helpful, cheers for them, and helps them support other families. It might offer you some valuable material that will help you be protected in case of some legal issues. It’ll probably give you a little more information that you can pass on to other people—so, sure, if you want to join it. The other answer would be No. If you're in Texas like us, we were quite protected, legally, and never ran into any problems.