Hi @ckenney
Welcome to the Canvas Community. Good news....no setup required! Students can do this automatically via the Grades menu item on their own. There are instructions here from the student's perspective: How do I approximate my assignment scores using the What-If Grades feature in the New Gradebook? (And even if you are not using the New Gradebook yet at your institution, it works in the current/"old" gradebook, as well.)
There is one thing you will have to do, however....and that's setup whichever assignment grouping your quizzes are in so that the lowest grade IS, in fact, dropped. There are instructions for doing this here: https://community.canvaslms.com/docs/DOC-9880-4152232976
I hope this helps, Carelys!
This discussion post is outdated and has been archived. Please use the Community question forums and official documentation for the most current and accurate information.