Positive behaviour for learning is a long term commitment and can take a few years to implement. From here:

• determine needs and competing priorities of school
• establish or regenerate a positive behaviour for learning team
• evaluate current school systems and practices using the benchmarks of quality or tiered fidelity inventory. a score of 80% indicates your school is ready for the additional training. sometimes, you may need to retrain in school-wide and classroom systems to strengthen these systems and practices.
• undertake the training that you and/ or your school identifies as a priority and need.