School psychologists are uniquely trained to deliver high quality mental and behavioral health services in the school setting to ensure all students have the support they need to be successful in school, at home, and throughout life. School psychologists are uniquely positioned in schools to facilitate the development, delivery, and monitoring of prompt, effective, and culturally responsive mental and behavioral health services of prevention and intervention. School psychologists' broadly focused preparation as academic, mental, and behavioral health service providers, coupled with their engagement in and familiarity with schools' organizational and cultural contexts, equips them to play a primary role in multi-tiered and responsive school-based mental and behavioral health programs. The mental and behavioral health of students is a necessary, appropriate, and critical focus of education for individuals birth to age 21. Mental and behavioral wellness is directly linked to overall positive student achievement, school climate, high school graduation rates, and the prevention of risky behaviors, disciplinary incidents, and substance abuse. This article presents the importance of qualified health professionals within the school setting.