Frisco ISD (and pretty much all of DFW) are closed for Tuesday as well. So 2-3 days, like you said, I had a doctors appointment today, but yesterday they already decided to reschedule everyone for Thursday. They could delay opening of schools Wednesday, but it still won’t be safe enough for busses to run for a 10am opening, as it still will be below freezing before 10. That means that whatever ends up melting mid day will just freeze over again for Thursday morning. Midday Thursday should melt whatever’s left, but we’ll see.