Haw. Code R. § 17-663-51
As used in this subchapter:
"Student" means any person who is:
(1) Age eighteen through forty-nine;
(2) Physically and mentally fit; and
(3) Enrolled at least half-time in an institution of higher education.
"Half-time" shall be as determined by the particular school. If a definition cannot be obtained from the school, "half-time" shall mean one-half the total number of hours, classes, or credits required for full-time enrollment as determined by the particular school.
"Institution of higher education" means:
(1) Any business, technical, trade, or vocational school that normally requires a high school diploma or equivalency certificate for enrollment in the curriculum; or
(2) A junior, community, two-year or four-year college or university that offers degree programs regardless of whether a high school diploma is required.
Haw. Code R. § 17-663-51