D.C. Mun. Regs. tit. 5-E, § 2102
2102.1 All students enrolled in an elementary, middle or junior high school shall be restricted to school grounds between the hours of 9 a.m. and 3:00 p.m. on days on which school is in session unless written parental request is made in advance for a student to leave school for one of the reasons set forth in § 2101.3.
2102.2 Principals of senior high schools, in consultation with staff and the larger school community, as appropriate, may determine whether they will have a closed campus.
2102.3 The Superintendent, at his or her discretion, may direct the closing of the campus at any senior high school.
2102.4 If the decision is made to have a closed campus (pursuant to §§ 2102.2 or 2102.3), all students enrolled in that school shall be restricted to school grounds between the hours of 9 a.m. and 3 p.m. or, during the hours required by their instructional program (whichever is longer) on days on which school is in session, unless a written parental request is made in advance for a student to leave school for one of the reasons set forth in § 2101.3.
SOURCE: Final Rulemaking published at 32 DCR 3668 (June 28, 1985); as amended by Final Rulemaking published at 39 DCR 1218 (February 28, 1992).