Classroom and mental health study

Classroom affects children's mental health, study finds
First-grade children whose teachers lack peer support and whose classrooms have inadequate resources had an increased risk of mental health problems, such as anxiety, attentiveness and sadness, according to a recent study. Researchers said the study doesn't prove causation, but it did speculate that similar findings might be true in other age groups.
Milkie, M., & Warner, C. (2010). Classroom Learning Environments and the Mental Health of First Grade Children. Journal of Health and Social Behavior, 52(March), 4-22