Background: We aimed to characterize relationships between delayed high school start time policy, which is known to lengthen school night sleep duration, and patterns in activity outcomes: physical activity, non-school electronic screen time (non-schoolwork), and sports and extracurricular activity among adolescents. Methods: We used data from the…

Background: Universal, classroom-based mental health literacy (MHL) curricula are associated with improved mental health knowledge, attitudes, and help-seeking behaviors. Young adolescents are an ideal target given their need for and receptivity toward MHL education. Methods: We conducted a scoping review to identify universal, school-based MHL…

Background: Physical activity is beneficial to physical, social, and emotional well-being, and schools are required to provide opportunities to engage in physical activity. While physical education and school sport have been extensively researched, little is known about the value of informal, unstructured, exercise opportunities. Methods: This…

Background: School violence is a significant public health concern. Most perpetrators exhibit psychosocial and behavioral warning signals which are often inadequately addressed. While policy and funding typically reinforce politically popular target hardening and threat assessment strategies, these are not most supported by research or requested…

Background: Despite recent tobacco control efforts, adolescent vaping remains an epidemic in the United States. The purpose of our study was to understand high school student vaping behaviors using the perceptions of Massachusetts school personnel during the critical window from when the Massachusetts statewide flavor ban legislation was passed in…

Background: Studies show that food insecurity is associated with adverse health behaviors for children and adults. However, published data among adolescents are limited. The objective of this study was to examine the association between food insecurity and substance use behaviors among US high school students. Methods: Data from the 2017 Youth…

Background: School-based health education can provide students with learning experiences that improve knowledge, attitudes, and perceptions (KAP) and behaviors regarding physical activity and nutrition. Methods: We conducted a 2-phase systematic review. Phase 1 was a review of reviews (ie, systematic reviews or meta-analyses) that were published…

Background: There is evidence of school-level variability in children's active behaviors. This study investigated the associations between school environments, policies and practices, and children's physical activity (PA) and active school transportation (AST), in a school ecology context. Methods: We recruited children (N = 1699, age = 10.2 ± 1.0…

Background: Student-teacher relationships are associated with the social and emotional climate of a school, a key domain of the Whole School, Whole Community, Whole Child Model. Few interventions target student-teacher relationships during the critical transition to high school, or incorporate strategies for enhancing equitable relationships. We…

Background: It is estimated that approximately 90% of children in foster care have experienced a traumatic event, with nearly half reporting exposure to 4 or more types of traumatic events. Educators must remain alert to indicators suggesting a history of trauma and understand the difficulties foster youth may face regulating their emotions and…

Background: A majority of research findings have focused on recess as instrumental to achieving minutes of physical activity rather than focusing on the psycho-social benefits associated with a high-quality recess environment. The purpose of the current study was to examine the relationship between recess quality and teacher-reported social,…

Background: Urban black adolescents' wellbeing in the early high school years can be negatively impacted by exposure to racial discrimination. These impacts may be buffered by supportive relationships with adults at school. We considered both the protective and promotive effects of culturally responsive teachers and caring school police on school…

Background: Few studies document milk selection and waste among high school lunch programs. Methods: This observational research assesses the types of milk selected and wasted among 5 Montana high school lunch programs. Over 6 days across the 2014-2015 school year, 3842 milk cartons were collected. Direct weighing was used to assess the ounces of…

Background: Among adolescents, the pathway from being offered drugs to engaging in drug use has been established. The prevalence of drug transactions specifically in schools is less understood. The purpose of this study was to identify the prevalence of adolescents who have reported drug transaction experiences (being offered, sold, or given an…

Background: Being bullied online is associated with being bullied in school. However, links between online bullying and violence-related experiences are minimally understood. We evaluated potential disparities in these associations to illuminate opportunities to reduce school-based violence. Methods: We used five cohorts of Youth Risk Behavior…