In the quiz submission data there is a work_flow field (Quiz Submissions - Canvas LMS REST API Documentation).
The possible data returned for this field is: <SPAN class="com" style="color: #880000;">['untaken'|'pending_review'|'complete'|'settings_only'|'preview']</SPAN>
Does anyone know what causes the 'settings_only'? Is this tracking if a student goes to the quiz page but DOES NOT click the 'Take' button?