Create a Folder in Google Drive App
Follow this guide to create folders in Google Drive in the App
Step 1
On the iPad, find and open the Google Drive app.

Step 2
Press on the Files icon and then press the Plus icon.

Step 3
Select Folder and name it as required

Step 4
If you would like to share the folder press on the ... icon and then press Share.

Step 5
Type the email address of the person you would like to share it with and click Send.
You can now save all of your work into this folder and your teacher/s will be able to see it.