Google Drive Folder and File Sharing

If you click the "Share" option for a file or folder you will see the "Share with others" window:

Google Share with

Type the address for each instructor. Make sure the option "Can edit" is selected and hit "Send". Failure to correctly share files and folders with the instructors may result in no credit for an assignment!

It is also a good idea to add a note specifying why you are sharing the folder or file.