Can I make an anonymous polls and get a list of all participant names (without knowing who submitted what)?

I would like to administer a poll to some 150 students.  I would like the entries to be anonymous, but I would like to have access to all the names of the students who submitted (to give them some extra credit).  How can I go about it? 

As soon as you include a form field for the Student's Name, you'd know who sent what when you view the submission. Any form field you add to your form will be linked and associated to the actual Form Submission Data.

The only way that I can think of to prevent this is leaning towards a practice/workflow that you have to adhere to from your end instead. Here are some suggestions:

1. NEVER open your Submissions Page. This will ensure you won't know who sent what.

2. Edit your Email Notification body template so it won't include the Name field (with the same goal that if you accidentally opened an Email Notification for a submission, you won't know who sent it).

3. Then create a report (can be in CSV, Excel, Grid or Table) and EXCLUDE everything else EXCEPT the name field. This way, once the report is generated, you'll get a full list of all the respondents' names WITHOUT knowing what they filled out on the poll.

(The screenshots and short clip I've given above were just examples but the same idea will apply to your form)