YES! Any FISD school can use an Other District time slot; (However, no out of district group can use a slot that is NOT labeled as Other District.)
Also- the Other District dates are labeled as such due to the fact that Frisco Transportation has listed these dates as limited or no buses. FISD teachers should check for bus availability immediately if choosing an Other District timeslot.
If you register and later learn you cannot get a bus, use the cancellation link in your original confirmation email to cancel.