28 C.F.R. § 523.41
(a) Evidence-Based Recidivism Reduction (EBRR) Program. An EBRR Program is a group or individual activity that has been shown by empirical evidence to reduce recidivism or is based on research indicating that it is likely to be effective in reducing recidivism; and is designed to help prisoners succeed in their communities upon release from prison. EBRR Programs may include, but are not limited to, those involving the following types of activities:
(c) Successful participation.
(4) An eligible inmate, as described in paragraph (d) of this section, will generally not be considered to be “successfully participating” in EBRR Programs or PAs in situations including, but not limited to:
(5)