It totally varies from state to state, but, we were homeschooling when we became foster parents, and it was a total non-issue. In fact, there are a few homeschooling foster parents in our area. It shouldn't matter at all.
Once they are in state custody, the state will remain involved until reunification or termination of parental rights occurs. Our experience fostering has been good so far- not too intrusive at all. But again, it all depends on your area. If homeschooling is legal where you live, it shouldn't be a problem, but you will need to get the caseworkers permission. They might be more willing to grant it if you use a charter school or something.
I hope it all works out for you.
