Emily,
You will find queries related at quizzes, grades, and question tags on the Ad-hoc contributed reports page. For tagged questions, see:
https://docs.moodle.org/310/en/ad-hoc_contributed_reports#Questions_which_are_tagged_within_a_course.2Fquiz
and for quizzes:
https://docs.moodle.org/310/en/ad-hoc_contributed_reports#Quiz_Module_Reports
and for grades:
https://docs.moodle.org/310/en/ad-hoc_contributed_reports#Grade_and_Course_Completion_Reports
Someone familiar with SQL should be able to use those to build the more complex reporting you need.
You will find queries related at quizzes, grades, and question tags on the Ad-hoc contributed reports page. For tagged questions, see:
https://docs.moodle.org/310/en/ad-hoc_contributed_reports#Questions_which_are_tagged_within_a_course.2Fquiz
and for quizzes:
https://docs.moodle.org/310/en/ad-hoc_contributed_reports#Quiz_Module_Reports
and for grades:
https://docs.moodle.org/310/en/ad-hoc_contributed_reports#Grade_and_Course_Completion_Reports
Someone familiar with SQL should be able to use those to build the more complex reporting you need.