I suggest that you go to the school that your children are enrolled in and discuss the matter. If you know where in OKC you will be living in the counselor's may be able to figure out the school your children would be enrolled in and the issue could be ironed out and the home schooling question could be addressed. In any event document the understanding and make sure--if the home schooling option exists--that you can document compliance.
On a different note, consider the possibility of making arrangements with local (WA) friends for the kids to stay there and finish the school year while you settle in and unpack. Of course, getting them to OKC presents other issues, among them financial. Best of luck.
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