1. Click on the form in your Google drive to open in edit mode.

2. Click on the responses tab

3. Click on the accepting responses toggle

Please note: The option for automatic recording of responses and the option to finish later is left on by default. This can allow students to amend their answers after leaving the classroom if they have not pressed submit. This option can be unticked within the form settings or the form can be closed to new responses at the end of the test.