Can I create a bell Schedule that starts on July 1 and doesn't count for ADA?

[ShelleyW]

I am trying to figure out a way to start school on July 1 for my preschoolers to be active and teachers take attendance, but not count for ADA.  It's really only for teachers and apps to sync.  Then on the first day of "school" for my TK and above, count it for ADA??