(1) A person shall not be entitled to receive supplementary welfare allowance while attending a course of study within the meaning of section 148, other than in the circumstances and subject to the conditions that may be prescribed.
(2) Subsection (1) is without prejudice to the entitlement of any person to receive supplementary welfare allowance in respect of a person referred to in that subsection who is a qualified adult or qualified child.
(3) Notwithstanding subsection (1), supplementary welfare allowance may, in a case in which there are exceptional circumstances, be granted to a person who would be entitled to receive supplementary welfare allowance but for that subsection.