earliest and latest call in times (when you have to report to the school)

This coming saturday my band preforms at 10 pm or something, we are just going as exhibition because of Yom Kippur, but we still problem won’t get home till 1 am. They haven’t said the call in time but we are going to leave around 7pm so maybe 5 or 5:30?

In the spring we are going to california and we are east coast, so the call in time is going to be something like 2 or 3 am.

Highschool btw.