; and (2) the reference to specialized spina bifida clinic in paragraph (3) of that section shall be treated as a reference to a specialized clinic treating the birth defect concerned under this section. 1824. Vocational training (a) Authority The Secretary may provide a program of vocational training to an eligible descendant if the Secretary determines that the achievement of a vocational goal by the descendant is reasonably feasible. (b) Applicable provisions Subsections (b) through (e) of section 1813 of this title shall apply with respect to any program of vocational training provided under subsection (a). 1825. Monetary allowance (a) Monetary allowance The Secretary shall pay a monthly allowance to any eligible descendant for any disability resulting from the covered birth defects of that descendant. (b) Schedule for rating of disabilities (1) In general The amount of the monthly allowance paid under this section shall be based on the degree of disability suffered by the eligible descendant concerned, as determined in accordance with a schedule for rating disabilities resulting from covered birth defects that is prescribed by the Secretary. (2) Levels of disability In prescribing a schedule for rating disabilities for purposes of this section, the Secretary shall establish four levels of disability upon which the amount of the allowance provided by this section shall be based. The levels of disability established may take into account functional limitations, including limitations on cognition, communication, motor abilities, activities of daily living, and employability. (c) Amount of monthly allowance The amount of the monthly allowance paid under this section shall be as follows: (1) In the case of an eligible descendant suffering from the lowest level of disability prescribed in the schedule for rating disabilities under subsection (b), $100. (2) In the case of an eligible descendant suffering from the lower intermediate level of disability prescribed in the schedule for rating disabilities under