; (cc) enrolled in a secondary school, an institution of higher education, or other institution providing post-secondary education, on a full-time basis, as classified by an educational institution; or (dd) engaged in a combination of activities described in items (aa), (bb), and (cc) to such an extent that, in the aggregate, such engagement is on a full-time basis. (II) The Secretary shall require a project owner to verify compliance with the requirement under subclause (I) by each person occupying a dwelling unit pursuant to a preference under this subparagraph annually in conjunction with reviews of income for purposes of determining eligibility for assistance described in clause (i). (III) The requirement under subclause (I) shall not apply to— (aa) a person physically or mentally unfit for employment, as determined in accordance with such standards as the Secretary shall establish; (bb) a parent or other household member responsible for the care of a dependent child under 6 or an incapacitated person