By default, older Moodle users may have British English as their preferred language on their Moodle page. Moodle allows users to change their preference to U.S. English.
1. On the left side, locate the Administration block and click Edit Profile.
2. You will be redirected to a new page. Scroll down and expand Preferences.
3. Under the Preferences tab, locate preferred language. Choose English-United States (en_us).
4. After you are done selecting the preferred language scroll down and click Update Profile.