Date enrolled on class roster

I would like to see the date a student was enrolled in a class listed on the class roster. We have a 2-week add/drop period. If a student is enrolled in on online class during this add/drop period, they may have missed one or two of the first assignments. Since I haven't necessarily met these students personally, it could be helpful to check the class roster and see whether their failure to complete the assignment was due to their being enrolled in the class late.