full-time elementary or secondary school student
(4) In determining for purposes of this subsection and subdivision (3) of subsection (c) whether an applicant is the wife, husband, widow, widower, child, or parent of a deceased employee as claimed, the rules set forth in section 216(h) of the Social Security Act [ 42 U.S.C. 416(h) ] shall be applied deeming, for this purpose, individuals entitled to an annuity under subsection (c) to be entitled to benefits under subsection (b) or (c) of section 202 of the Social Security Act [ 42 U.S.C. 402 ] and individuals entitled to an annuity under paragraph (i) or (ii) of subsection (d)(1) to be entitled to a benefit under subsection (e), (f), or (g) of section 202 of the Social Security Act. For purposes of paragraph (iii) of subdivision (1), a child shall be deemed to have been dependent upon his parent employee if the conditions set forth in section 202(d)(3), (4), or (9) of the Social Security Act are fulfilled. The provisions of paragraph (7) of section 202(d) of the Social Security Act (defining the terms “full-time elementary or secondary school student” and “elementary or secondary school”) shall be applied by the Board in the administration of this subsection as if the references therein to the Secretary were references to the Board. A child who attains age nineteen at a time when he is a full-time elementary or secondary school student (as defined in subparagraph (A) of paragraph (7) of section 202(d) of the Social Security Act and without the application of subparagraph (B) of such paragraph) but has not (at such time) completed the requirements for, or received, a diploma or equivalent certificate from a secondary school (as defined in section 202(d)(7)(c)(i) of the Social Security Act) shall be deemed (for purposes of determining his continuing or initial entitlement to an annuity under this subsection) not to have attained such age until the first day of the first month following the end of the quarter or semester in which he is enrolled at such time (or, if the elementary or secondary school in which he is enrolled is not operated on a quarter or semester system, until the first day of the first month following the completion of the course in which he is enrolled or until the first day of the third month beginning after such time, whichever first occurs).