Answer:

enrollee

Answer	Crossword Clue
ENROLLEE	One who's signed up
ENROLLEE	One signed up
ENROLLEE	Joiner

ENROLLEE	Signer-upper
ENROLLEE	Course taker
ENROLLEE	Class attender, presumably
ENROLLEE	Entry on a registrar's list
ENROLLEE	Person in school
ENROLLEE	One in school
ENROLLEE	Matriculant
ENROLLEE	One who is registered for class

ENROLLEE	Official class member
ENROLLEE	Program participant
ENROLLEE	Student
ENROLLEE	Sign-up
ENROLLEE	Register signer
ENROLLEE	Class signer-upper
ENROLLEE	One on a registrar's list
ENROLLEE	Course registrant

ENROLLEE	Course participant