All children of school age being instructed in the schools of the District beyond the 2nd grade shall be given a whole school-day session.
D.C. Code § 38-901
Whole school-day sessions
June 20, 1906, 34 Stat. 316, ch. 3446, § 1
Official source: D.C. Law Library (Council of the District of Columbia). Reproduced from public-domain District of Columbia statutes; confirm against the official source for the current text. Not legal advice.