As an admin, enable “Web services for mobile devices” on Site administration ► Advanced features Create a Token in the mobile app service for any user on the site (not an admin account) Click on Site administration ► Server ► Web services ► Manage token Create a course using Separate groups (but doe not create any group within the course, just enable the course setting forcing separate groups) with at least one activity in it (a quiz or assignment) Enrol as student the user from step 2 Open the console and execute this new curl request, replacing WS_TOKEN with the token you just created and the SITE_URL with yours. curl ‘SITE_URL/webservice/rest/server.php?moodlewsrestformat=json' --data 'courseid=COURSEID&userid=USERID&wsfunction=gradereport_user_get_grade_items&wstoken=WS_TOKEN' | python -m "json.tool" Confirm that: You don't receive any error/exception as response of the curl request.