[영문]Background: School-based screening for health conditions can help extend the reach of health services to underserved populations. Screening for mental health conditions is growing in acceptability, but evidence of cost-effectiveness is lacking. This study assessed costs and effectiveness associated with the Developmental Pathways Screening Program, in which students undergo universal classroom emotional health screening and those who have positive screens are provided with on-site clinical evaluation and referral.Methods: Costs are enumerated for screening and clinical evaluation in terms of labor and overhead and summarized as cost per enrolled student, per positive screen, and per referral. Cost-effectiveness is summarized as cost per student successfully linked to services. School demographics are used to generate a predictive formula for estimating the proportion of students likely to screen positive in a particular school, which can be used to estimate program cost.Results: Screening costs ranged from