Odds are you have more than one Google Account. Your personal and your school at least. The best way to manage you multiple accounts is by adding Chrome logins. This allows you to be in both accounts at the same time without conflicts. However, it can be confusing as to which account you are in. One of my tricks to handle this is to change the Chrome Theme.
In the upper right of Chrome click on the 3 dots and go to “Settings.” Scroll down to “Appearance” and click on “Themes” and “Open Chrome Web Store.”
Select a Theme
For each of your accounts select a different theme. This makes it easy to know at a glance which account you are using.