D.C. Code § 10-202

The Board shall consist of 7 members as follows: a representative of the Mayor of the District of Columbia selected by the Mayor; a representative of the Board of Education selected by that Board; the Superintendent of the National Capital Parks ex-officio; and 4 members, who shall have been for 5 years immediately preceding their selection bona fide residents of the District of Columbia, appointed by the Mayor of the District of Columbia for a term of 4 years each, except the original appointments which shall be for terms of 1, 2, 3, and 4 years, respectively. The appointment of the 4 citizens shall be without regard to race, sex, or creed, and shall take judicious account of the various parent, civic, and other organizations through which residents of the District voice their civic wishes and advance the common welfare. The 2 members of the Board representing the Mayor and the Board of Education shall be designated annually by their respective agencies.