Bump your /version.php file to force Moodle to reload the Mobile service Create a course with a student, the course must have at least one section. Create a mod_quiz activity with at least one question and at least 2 allowed attempts Log in as the student and do the quiz two times, do not finish the attempt the second time. As admin, enable "Mobile services": Plugins ► Web Services ► Mobile Create a Token for the student user Click on Site administration ► Plugins ► Web services ► Manage tokens Next, you can do a CURL REST call simulating a WS client with the student user . You need to replace the wstoken, quizid (the quiz instance value) and the URL of your moodle instance curl 'http://localhost/m/stable_master/webservice/rest/server.php?moodlewsrestformat=json' --data 'quizid=2&status=all&wsfunction=mod_quiz_get_user_attempts&wstoken=ffbe3a3002f235bf9d01fd9369e10b66' --compressed Confirm that You can see a list of your attempts and its current status (one finished, one unfinished) Add the following parameters to the curl command: &userid=0&status=finished Check now that the curl command only returns the finished attempt Do the same but changing status to unfinished Check now that the curl command only returns the unfinished attempt Now, create a token for a teacher and replace the wstoken in the curl command Run the command again with the value userid equal to the student it, check that as a teacher you can see the student user attempts