As an admin, enable “Web services for mobile devices” on Site administration ► Advanced features Create a course and a user, and enrol the user as a student in the course. In the course, create a new quiz with the following settings: Review options: uncheck "Marks" and "Maximum marks" inside "During the attempt", "Immediately after the attempt" and "Later, while the quiz is still open", but keep them checked in "After the quiz is closed". So you need to have 3 unchecked checkboxes and 1 checked for "Marks" and for "Maximum marks".  Add at least 1 question in the quiz. As the student, attempt the quiz and finish the attempt. Back as admin, edit the quiz settings and change "Timing > Close the quiz": enable this option and set it to a date in the past (quiz is closed). Create a Token in the mobile app service for the student on the site (not an admin account) Click on Site administration ► Plugins ► Web services ► Manage tokens Open the console and execute this new curl request, replacing WS_TOKEN with the token you just created and the SITE_URL with yours and QUIZ_ID with the id of the quiz (the instance id, not the course module ID). curl ‘SITE_URL/webservice/rest/server.php?moodlewsrestformat=json' --data 'wsfunction=mod_quiz_get_combined_review_options&quizid=QUIZ_ID&wstoken=WS_TOKEN' | python -m "json.tool" Confirm that the returned data contains an option with name="marks" and value=2. As admin, go to the quiz and click More > Overrides. Click "Add user override". In "Override user" select the student, and in "Close the quiz" change the date and put a date in the future. Save changes. Repeat the CURL request again. Check that now the "marks" option has value=0.