One requirement is for the child to attend school from the age of 6 to the age of 18. There are certain subjects that have to be covered under the law, and they are: Math, Reading, Spelling, grammar and Good citizenship.
Yes, I believe so. I know a family who homeschooled around the Austin area in Texas, and they had a homeschool group and everything. I'm pretty sure that means it isn't illegal, but you may want to...
Yes, there is a 4 hour ethics course requirement to fulfill the Texas CPE requirements. The course has to be approved by the state board in order to receive the ethics credits.