Google services (including ClassRoom) are available in many languages, including obviously English. The user can decide which language he/she wants to use.

Select “Manage Google account” to change language of the services.

Select “Data and personalisation” on the left side of the menu.

At the bottom of the page you will see an option to change the language in the “General Internet settings” field.

By selecting the right arrow next to the list of languages, the user can add a language or set a new main language by clicking the up arrow next to the selected language.