We examine the effect of attending stand-alone technical high schools in Connecticut using regression discontinuity. Male students are 10 percentage points more likely to graduate from high school and have half a semester less time enrolled in college. Male students have 32% higher average quarterly earnings. Earnings effects may in part reflect general skills: male students have higher attendance rates and test scores, industry fixed effects explain less than 1/3rd of earnings gains and large earnings gains persist past traditional college going years. Attending a technical high school does not affect the outcomes of female students. [This paper was published in "Review of Economics and Statistics" v105 n4 p867-882 2023.]