Hi,
what is your idea of distributing the survey?
By a general link that anybody may enter the survey? Obviously not.
So you have a closed survey and you invite your participants?
And one student can be in several courses, or not?
If YES: One student must be able to take the survey several times.
And this phrase
connect participants attribute to the surveys or maybe I will be missing something.
makes me think that you are talking about several different surveys for the different courses.
Did you read about the Central_Participant_Database?
www.limesurvey.org/manual/Central_Participant_Database
Joffm