Starting off the year, the school Calendar would already be set. These are often shared with Parents to keep them informed of important dates and events. You can create events to keep Students and Parents aware of through the Calendar.
To create events, simply click on "New Event". A window will appear with all the necessary details that you need to fill in, as seen below:
When you're ready, click on "Create Post" and your new event will show on your School Calendar.