When managing your school, you can change the starting and ending dates of your calendar by going to the GENERAL section and clicking the pen icon in the "Dates" box.
You can also set a date before which teachers or students can't connect to Studyo. This allows you to set up your school and make sure everything is valid before they have access to it.
Watch out! If you move your start date backward while your school is active, you will affect the position of your cycle days. You must visit the CALENDAR section and adjust your special days.