Google Apps Script to make multiple copies of same file
This apps script was developed to share a single file as a read only document with multiple students
The example file to make your own copy can be found here
https://docs.google.com/spreadsheets/...
Here is a version that doesn't send notification emails:
https://docs.google.com/spreadsheets/...
This second version uses Drive services API. If it doesn't work then you'll need to go into the script editor and enable Drive (under the services menu).