I love spreadsheets and I love students collaborating. This comes together by using Google Sheets spreadsheets.
After making a copy of templateTab, paste your roster into column A. I recommend that you have a spreadsheet in your Google Drive that has a list of your students names and email addresses. This makes it easy to copy and paste your roster when you need it.
To see a sample Click Here.
After running templateTab attach the file in Google Classroom as "Students can edit file." This immediate allows all students in the class to collaborate on the document. Students can protect their tab by clicking on the arrow on the tab and choosing "Protect sheet."
Not Google Classroom
If you are not a Google Classroom user, change the sharing settings on the document to "Anyone with the link can edit." Distribute the link.