1) Class attender, presumably 2) Class signer-upper 3) Course participant 4) Course taker 5) Human 6) Individual 7) Joiner 8) Matriculant 9) Matriculated student 10) Mortal 11) Official class member 12) One signed up 13) Person 14) Person in school 15) Program participant 16) Register signer 17) Sign-up Found on https://www.crosswordclues.com/clue/enrollee
Any person eligible as either a subscriber or a dependent for service in accordance with a contract. The same as beneficiary, individual, or member of a health plan. Found on http://www.encyclo.co.uk/local/20102