38 C.F.R. § 21.3305
(a) Special restorative training should be uninterrupted. An eligible person once entered into special restorative training should pursue his or her course to completion without interruption. Wherever possible, continuous training shall be provided for each eligible person, including training during the summer, except where, because of his or her physical condition or other good reason, it would not be to his or her best interest to pursue training. As long as the eligible person is progressing satisfactorily toward overcoming the effects of his or her disability(ies), the eligible person will be continued in his or her course of training without accounting for days of nonattendance within the authorized enrollment.
(Authority: 38 U.S.C. 3541)
(b) Interrupting special restorative training. Special restorative training will be interrupted as necessary under the following conditions:
(6) When the eligible person's progress is materially retarded because of his or her negligence, lack of application or misconduct.
(Authority: 38 U.S.C. 3541, 3543(b))
[48 FR 37973, Aug. 22, 1983, as amended at 73 FR 2425, Jan. 15, 2008]