D.C. Mun. Regs. tit. 22, r. 22-B146
Beginning with the 2014/2015 school year, a student enrolling in grade six (6) shall receive the first dose of HPV vaccine at age eleven (11). Students enrolling in grades seven (7) through twelve (12) who have not previously been immunized for HPV shall receive the vaccine before enrollment or provide an opt-out form, as provided in § 146.4.
The second dose of HPV vaccine shall be administered not less than four (4) weeks after the first dose and by two (2) months after the first dose.
A third dose of HPV vaccine shall be administered not less than twelve (12) weeks after the second dose and by six (6) months after the first dose.
The parent or legal guardian of a student required to receive a vaccine under this section may opt out of the vaccination for any reason by signing a form provided by the Department that states that the parent or legal guardian has been informed of the HPV vaccination requirement and has elected not to participate. A student eighteen (18) years of age or older may opt out on his or her own behalf by signing a form provided by the Department that states that the student has been informed of the HPV vaccination requirement and has elected not to participate.
D.C. Mun. Regs. tit. 22, r. 22-B146