Three basic categories depict the levels to which the PEF model may be institutionalized school-wide:

• Beginning: most staff have basic information regarding the PEF model; some staff have been trained in the model; few staff actually practice or teach the requisite attitudes, concepts and skills
• Moderate: most staff have been trained in the PEF model; some staff practice and teach the requisite attitudes, concepts and skills; mediation training has begun; parent training has begun
• Extensive: all staff have been trained in the PEF model; most teachers practice and teach requisite attitudes, concepts and skills; students use an active peer mediation program; the parent program is active; student skill competency is exported (e.g., mentoring other students, service learning projects, etc.)

The PEF model is most likely to provide meaningful improvements in the school climate and student performance when implemented extensively and according to the implementation guide. Comprehensive implementation of the PEF model takes commitment, planning and consistent follow-through. PEF's expert training and technical assistance can substantially help promote the process, but the actual implementation responsibility lies with individual school stakeholders.