20 U.S.C. § 3462

1. (a)The Secretary may as provided in appropriation Acts obtain the services of experts and consultants in accordance with the provisions of section 3109 of title 5 and may compensate such experts and consultants at rates not to exceed the daily rate prescribed for GS–18 of the General Schedule under section 5332 of such title.
2. (b)
   1. (1)Notwithstanding any other provision of law, the Secretary may use not more than 1 percent of the funds appropriated for any education program that awards such funds on a competitive basis to pay the expenses and fees of non-Federal experts necessary to review applications and proposals for such funds.
   2. (2)The provisions of paragraph (1) shall not apply to any education program under which funds are authorized to be appropriated to pay the fees and expenses of non-Federal experts to review applications and proposals for such funds.