preassessments

I dont understand the statement below. When I take a preassessment it only tells me to enter in my first name, there is no place for ssn or email. So how do we make sure you know we took the preassessments?

"the preassessment grade will not affect your grad -- if you at least do it! Therefore, please put your correct name, SSN, and e-mail address in the appropriate boxes. ( If you you are foolish enough not to do a preassessment, I will enter a zero that is equivalent to a single lab grade!)"