D.C. Code § 10-223
No power or authority conferred by this chapter shall be construed to abridge the powers of the Board of Education, the Mayor of the District of Columbia, or the National Park Service to refuse the use of any ground, building, or facility under their individual or collective control whenever the use of any such ground, building, or facility for recreational purposes would interfere with the use or purpose for which such ground, building, or facility was acquired or created, and nothing herein expressed or implied shall be construed to abrogate any powers vested in the Board of Education by the Organic Act of 1906 insofar as the control of public education and all necessary facilities and personnel is concerned.
D.C. Code § 10-223
Use of buildings and grounds, authority, see § 38-401. .