Only limited evidence supports the role of school environment in impacting adolescent mental health, according to a review by researchers at England's University of Bristol. They evaluated reports from five controlled trials and 23 cohort studies. “Two nonrandomized trials found some evidence that a supportive school environment improved student emotional health, but three randomized controlled trials did not,” they said in the journal Pediatrics, published online April 2. “Six cohort papers examined school-level factors but found no effect. Methodological shortcomings were common.”Perceptions of school connectedness and teacher support predicted future emotional health, but school effects were smaller than individual-level effects, they said. More studies, especially randomized controlled trials, are needed to understand which school-based interventions can benefit students' mental health.To read more in about mental health interventions in schools, see Psychiatric News here and here. (Image: Elena Eliseeva/Shutterstock.com)