J.L.
I work at a school that is heavily open-enrollment based and I know that for us, because of the changes in the open-enrollment window this year, we have had to notify students much later than usual. We still have a large number of students who are not "officially" in the school yet, although we are treating them as if they were. I would contact the school district you are hoping to attend and see if they can give you any more information, but understand that the last-minute change in open-enrollment laws has really made this more difficult for schools to manage in a timely way. I hope you get you choice school!
J.