The rules of evidence required to prove that State or local authorities are practicing racial discrimination in assigning students to public schools shall be uniform throughout the United States. ( Pub. L. 93–380, title II, § 254 , Aug. 21, 1974 , 88 Stat. 520 .) Statutory Notes and Related Subsidiaries Effective Date Section effective on and after sixtieth day after Aug. 21, 1974 , see section 2(c) of Pub. L. 93–380 , set out as a note under section 1221–1 of this title .