MORE THAN ONE GOOGLE ACCOUNT is used on my computer. How do I keep them separate?

When students use computers at home, it is difficult to ensure Google accounts are not interrupting each other. The first defense for all users to constantly check which account is being used, as often as every page/screen change. 

An effective way to prevent account interruption is to make the district account the default account by logging out of all Google accounts on the device, then logging into the district account first. 

Please watch this video for clarity.