Let’s see, are they required to present a birth certificate, shot record, transcripts from previous schools, etc, No. Well OK neither did our _Resident.
In OH (this state isn't all bad) there's an easily available public online homeschool option, with several choices. State law now allows participation of students using it to participate in extra curricular activities at their public school. I could envision a situation where all the real students take this option, perhaps forming clusters that a parent can supervise. And the public schools will become sewers that voters will be unwilling to support any more than the have to.