I've seen sentences like this one in which "i.e." refers to a word or a phrase:
I like citrus fruits, i.e. the juicy, edible fruits with leathery, aromatic rinds of any of numerous tropical, usually thorny shrubs or trees of the genus Citrus. (http://dictionary.reference.com)
I wonder if it can restate the whole sentence, especially in this context:
Nowadays, many students tend to start their tasks as close to the deadline as possible, i.e., "Student Syndrome".
Here I mean:
Student Syndrome is a phenomenon in which the student is likely to begin his or her tasks as late as possible.