Definition of enrolls:
(v) :
(education) To register as a member of an educational institution.
(v) :
(chiefly US, education) To register for a class or course of study.
(v) :
(intransitive or reflexive) To enlist oneself (in something) or become a member (of something).
(v) :
(transitive) To enlist (someone) or make (someone) a member of.
(v) :
(transitive) To enter (a name, etc.) in a register, roll or list
(v) :
(Australia, New Zealand) To register to vote.