In a course create a lesson with at least one question page and configured to allow multiple attempts Enrol one user as student in the course where the lesson is. Attempt the lesson as the student a couple of times (please check as teacher that in the attempts report you see that the student did two attempts) 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, lessonid (the lesson instance value) and the URL of your moodle instance curl 'http://localhost/m/stable_master/webservice/rest/server.php?moodlewsrestformat=json' --data 'lessonid=9&wsfunction=mod_lesson_get_user_grade&wstoken=12a2a65aeea2a177055e233f9e303218&moodlewssettingfilter=true' | python -m "json.tool" Confirm that you receive correctly the grade and that the grade match with the one in the web interface. Now, create a token for a teacher in the course and execute again the curl request appending: &userid=X (X is the id of the student user who attempted the lesson) Confirm that you receive correctly the grade Now, using again the student wstoken: curl 'http://localhost/m/stable_master/webservice/rest/server.php?moodlewsrestformat=json' --data 'lessonid=9&lessonattempt=0&wsfunction=mod_lesson_get_user_attempt_grade&wstoken=12a2a65aeea2a177055e233f9e303218&moodlewssettingfilter=true' | python -m "json.tool" Check that you see correctly the grade of your first attempt Execute the curl request again but with lessonattempt=1 and check that you receive the grade for your second attempt Using the teachers token execute again the curl request appending: &userid=X (X is the id of the student user who attempted the lesson) and check that you see the same information that with the user token