Copy pasting from their website:
About one-third of probationers and parolees fail the terms of their supervision. Over three-quarters of parolees are re-arrested within five years, and over half return to prison. High failure rates for people on probation and parole—whether for new offenses, revocations, or individuals who abscond from supervision—result in increased crime, crowded prisons and jails, and strained public budgets. Indeed, every single one of the seventeen states that have undertaken justice reinvestment since 2010 has found probation or parole revocations to be an important driver of their growing prison populations. And despite a variety of local, state, and Federal initiatives over the last two decades, failure rates for supervised individuals have not meaningfully fallen.
Why Swift Certain and Fair? Because—if the conditions are right—a SCF program can take high-risk individuals in your jurisdiction and substantially reduce their drug use, revocation and re-arrest rates, and the subsequent reliance on incarceration.
Swift: SCF programs deliver a sanction immediately upon detection of a violation, which is critical in changing behavior. Responding swiftly also supports perceptions of the fairness of the program, reinforcing that element of SCF programs.
Certain: The consistency and predictability of punishments make the consequences of bad behavior clear to the offender, reinforcing the need to make better decisions and change behavior. An essential role is played by the clearly-defined behavioral contract with the offender—a tool that has repeatedly been proven to increase perceptions about the certainty of punishment.
Fair: The clear demarcation of the offenders’ new supervision conditions and the opportunity for a fresh start allow the offender to regain their sense of self-control. The contract enhances the perceived fairness of any subsequent punishment; this perception of fairness is further supplemented by the sparing rather than harsh level of punishment upon violation, which additionally limits disruption of employment and other non-criminal routines and relationships.