Tell him to forget it. Cancel school. And take the tax money and refund it to parents in the form of vouchers which they can pay for private schools.
Vouchers are a bad idea...and I'm a homeschooling conservative saying this.
The reason is that federal money, even in the form of vouchers, never comes without regulation. You want to see mandated curriculum for homeschoolers? Move to a voucher program and it's inevitable.
Vouchers would have great benefits, and unintended consequences. Consequently, I oppose them.
While that, or Oberon's idea, are what I would prefer, we're working within the constraints of the existing system here.