As an aspect of sentence planning, the Prison Services Regimes Research and Development Section has developed a strategy for the general management of inmate programs, which is termed "sentence management" in this paper. The system of sentence management across all sentence groups is a five-step cycle: inmates are observed under natural conditions of activities; observed behavior (attainment in activities) is recorded (continuous assessment); profiles of attainments become the focus for interview dialogs/contracts; inmates are given targets based on attainment; and elements of problem behavior are addressed by opposite allocation. With little intrusion into the operation of inmate activities, behavior that is central to these activities can be monitored and recorded more directly to identify levels of inmate competencies across the range of activities. Fundamental to the management system is the fact that classes of behavior (contrasted with properties of inmates) are used as the basic data. These classes of behavior are demanded by activities and routines and should serve as basic data for regime monitoring. The paper has sections on attainment areas, attainment criteria, competence checklists, and record of targets.