If you truly want to go paperless, here's a nifty hack to provide your students with quantitative feedback using a Google Sheets rubric Google Classroom assignment.
Step 1:
Create your rubric template in Google Sheets. Make your own or find one online (this one from +Alice Keeler is pretty awesome.)
Step 2:
Create your assignment in Google Classroom. Attach whatever resources are required to complete the assignment, but also attach the rubric template. Be sure to select the "Make a copy for each student" option after attaching the rubric.
Step 3:
After students have completed the assignment, open their rubric and their work and easily grade their work by switching between tabs. When finished, close both tabs and assign them their score. Done!
The end result: a document with your qualitative assessment (feedback, comments, etc.), an automated rubric with your quantitative feedback, and the final grade with private comments in Google Classroom.
No exchange of paper necessary!
Try it out, and let us know how it works within your classroom by leaving a comment below!
