In addition to interfering with PBIS [positive behavior interventions and supports] implementation, teacher stress also contributes to teacher turnover. About half of teachers leave the field within their first 5 years, often due to the stress of the profession. Aside from its significant personal, financial, and societal burden, high teacher turnover creates instability that undermines the likelihood a system will be able to sustain PBIS implementation over time.
(PDF courtesy of Journal of Positive Behavior Interventions)