I wouldn't hold my breath waiting for that if I were you....I'm still waiting for parents of homeschooled children to be allowed to exempt themselves from paying taxes that go to the Government schools, since they are not deriving a benefit from that Government 'service' :-)
Scool taxes are a little different, because they are paid by people eligible to use the services as well as those who aren’t. But, it does seem like home schoolers should get the same money from the state that the district would get, or a tax credit for the same amount (including the land and building value, which districts receive free).