earlier of— and all that follows through the age of 19, and inserting the following: the earlier of— (i) the first month during no part of which the child is a full-time elementary or secondary school student or an eligible full-time post-secondary school student, (ii) the month in which the child attains the age of 19, but only if the child is not an eligible full-time post-secondary school student during any part of such month, or (iii) the month in which the child attains the age of 22, . (3) Section 202(d)(1)(G) of such Act ( 42 U.S.C. 402(d)(1)(G) ) is amended by striking (if later) and all that follows through the the age of 19, and inserting the following: (if later) the earlier of— (i) the first month during no part of which the child is a full-time elementary or secondary school student or an eligible full-time post-secondary school student, (ii) the month in which the child attains the age of 19, but only if the child is not an eligible full-time post-secondary school student during any part of such month, or (iii) the month in which the child attains the age of 22, . (4) Section 202(d)(6)(A) of such Act ( 42 U.S.C. 402(d)(6)(A) ) is amended to read as follows: (A) (i) is a full-time elementary or secondary school student and has not attained the age of 19, (ii) is an eligible full-time post-secondary school student and has not attained the age of 22, or (iii) is under a disability (as defined in section 223(d)) and has not attained the age of 22, or . (5) Section 202(d)(6)(D) of such Act ( 42 U.S.C. 402(d)(6)(D) ) is amended to read as follows: (D) the earlier of— (i) the first month during no part of which the child is a full-time elementary or secondary school student or an eligible full-time post-secondary school student, (ii) the month in which the child attains the age of 19, but only if the child is not an eligible full-time post-secondary school student during any part of such month, or (iii) the month in which the child attains the age of 22, but only if he is not under a disability (as so