Hopefully by now you are realizing in your head that the Google applications have a lot of interconnectivity, and utilize the same appearance for their pop-up menus and other dialog boxes that you encounter.
So, it shouldn’t come as a surprise that Google Calendar and Google Classroom are BFFs. The moment you create a class in Google Classroom, a calendar for that class is automatically created. Every teacher and every student who is added to that class will have the calendar for it added to their Google Calendar screens.
So, that means that when you enter a deadline into Google Classroom, it is going to go into the calendar of all your students.
THIS MEANS THAT WE WANT TO TEACH KIDS TO USE GOOGLE CLASSROOM AS EARLY AS POSSIBLE AND CONTINUE TO REINFORCE ITS USE.
Sorry to be digitally shouty there, but the sooner we teach kids to refer to Google Calendar for school events and deadlines, the more acclimated to that they will become. The goal would be that by the time they are into Div 3 & 4, it should be almost second-nature for them to be using Google Calendar in their personal devices.

Looking at the above image from my calendar, you can see that there is a Math 9 calendar and a Cosmetology 9 calendar. You may be wondering why they are in different categories. Math 9 is my own class. That calendar was generated when I created that class in my Google Classroom. (Again, I didn’t create the calendar per se; I created a class with that name in Google Classroom and the calendar was automatically created by Google Classroom). The Cosmo class is one that another teacher is teaching, and I was added to it as a co-teacher.
If a calendar is “checked off”, you will see its events on the calendar on your screen. If it is unchecked, you cannot see its events. For the most part, you would likely want your Google Classroom calendars unchecked, but it is super convenient when you’re doing your long-range planning to be able to have them show on your calendar, if for no other reason than planning your due dates for major assignments to allow you to have a reasonable grading schedule!