; and (iii) the use of such real property shall be restricted to purposes of carrying out the duties of the Commissioner as authorized by this Act and any other Federal law. . (b) Prohibition on use of Trust Funds for certain administrative costs Section 201(g)(5) of the Social Security Act ( 42 U.S.C. 401(g)(5) ), as added by subsection (a), is further amended by adding at the end the following: (B) (i) Funds made available for expenditure pursuant to the authorization in this subsection may not be used for the operation and maintenance of real property in amounts that exceed the actual costs of such operation and maintenance, including any amounts for overhead, space and services, repair, replacement, or depreciation. (ii) For purposes of this subparagraph, funds made available for the replacement of the National Computer Center shall be deemed to be funds made available as described in clause (i). . (c) Annual report Section 201(c) of the Social Security Act ( 42 U.S.C. 401(c) ) is amended by inserting after the second sentence in the matter following paragraph (5) the following: Such statement of assets shall include an estimate of the fair market value of all real property recorded as an asset of the Trust Funds at the end of the preceding fiscal year. . (d) Effective date The amendments made by subsection (a) shall apply with respect to real property acquired using funds solely derived from the Trust Funds and disposed of on, before, or after the date of enactment of this Act. 304. Require child beneficiaries to attend school (a) Child’s benefits under title II (1) In general Section 202(d)(1)(B)(i) of the Social Security Act ( 42 U.S.C. 402(d)(1)(B)(i) ) is amended by striking age of 18 and inserting applicable full-time attendance age . (2) Applicable full-time attendance age Section 202(d)(7) of such Act ( 42 U.S.C. 402(d)(7) ) is amended by adding at the end the following: (E) The applicable full-time attendance age is— (i) the age of 18 (in the case of an individual who becomes entitled to child’s