Paced models are a familiar mode since they are used almost exclusively in campus-based schools. Institutes that offer both distance and campus programs usually use paced models so that teacher workload, student semester planning, tuition deadlines, exam schedules, and other administrative details can be synchronized with campus delivery. Student familiarity and the pressure of deadlines encourages students to readily adapt to and usually succeed in paced models. However, student freedom is sacrificed as a common pace is often too fast for some students and too slow for others. In addition life events, professional or family responsibilities can interfere with a student's capability to complete tasks to an external schedule. Finally, paced models allow students to readily form communities of inquiry and to engage in collaborative work.