Caldwell DM, Davies SR, Hetrick SE, et al. Lancet Psychiatry. 2019;6(12):1011–1020. doi:10.1016/S2215-0366(19)30403-1

This review used state of the art methods to examine the effectiveness of school-based interventions to prevent anxiety and depression. Disappointingly, despite worldwide interest in the promise of school-based mental health, the authors found there was little evidence that educational setting-based interventions focused solely on the prevention of depression or anxiety are effective.

https://pubmed.ncbi.nlm.nih.gov/31734106-school-based-interventions-to-prevent-anxiety-and-depression-in-children-and-young-people-a-systematic-review-and-network-meta-analysis/