; (ii) continues to meet all eligibility requirements to receive a Federal Pell Grant under this section; and (iii) attends an institution of higher education on average, on not less than a half-time basis. (B) Notwithstanding any other provision of this subsection, the Secretary shall award an additional Federal Pell Grant to an eligible student for the additional payment periods during an award year that are not otherwise fully covered by the student's Federal Pell Grant for the award year. (C) In the case of a student receiving more than one Federal Pell Grant in a single award year under subparagraph (B), the total amount of the Federal Pell Grants awarded to such student for the award year shall not exceed an amount equal to 150 percent of the total maximum Federal Pell Grant for such award year calculated in accordance with paragraph (7)(C)(v)(II). (D) Any period of study covered by a Federal Pell Grant awarded under subparagraph (B) shall be included in determining a student's duration limit under subsection (c)(5). (9) In any case where an eligible student is receiving a Federal Pell Grant for a payment period that spans 2 award years, the Secretary shall allow the eligible institution in which the student is enrolled to determine the award year to which the additional period shall be assigned. . (b) Effective date The amendment made by subsection (a) shall take effect on July 1, 2017. 4. Pell Grant Duration Limit Section 401(c)(5) of the Higher Education Act of 1965 ( 20 U.S.C. 1070a(c)(5) ) is amended by striking 12 semesters and inserting 15 semesters each place the term appears.