Download a Desmos teacher dashboard. (unofficial)
Export you Desmos teacher dashboard as a .csv file.
To use this extension...
1) Go to teacher.desmos.com, choose an activity, and choose a dashboard (aka Class Code).
2) Once you are looking at the dashboard you can run this extension to take the information from the dashboard and download it as a .csv file that you can then open using any spreadsheet application (Excel, Google Sheets, etc.)
*Unofficial, Unsupported, Teacher Made App