Most of the literature on the evaluation of training programs focuses on the effect of participation on a particular outcome (e.g. earnings). The treatment is generally represented by a binary variable equal to one if participation in the program occurs, and equal to zero if no participation...

We assess the effectiveness of Job Corps (JC), the largest job training program targeting disadvantaged youth in the United States, by constructing nonparametric bounds for the average and quantile treatment effects of the program on wages. Our preferred estimates point toward convincing...