This is a Google Sheets™ Add-on that FORMATS the spreadsheet correctly as a rubric to be able to import into Google Classroom™. This creates rubrics and scoring guides. 

After designing your rubric, add to a Google Classroom™ assignment by selecting "Rubric" when creating the assignment. Select "Import from Google Sheets™." 

TIP: Save the Google Sheets™ spreadsheet to a folder in Google Drive™. Organizing rubrics in a Drive folder make them easier to access for assignments as well as to share. 

This Add-on is created by Alice Keeler, co-author of the book "Stepping Up to Google Classroom." It collects NO user data. Check out more of her Add-ons at http://alicekeeler.com/codedbyalice