We investigate the role of mechanical ability as another dimension that, jointly with cognitive and socio-emotional, affects schooling decisions and labor market outcomes.Using a Roy model with a factor structure and data from the NLSY79, we show that the labor market positively rewards mechanical ability.However, in contrast to the other dimensions, mechanical ability reduces the likelihood of attending four-year college.We find that, on average, for individuals with high levels of mechanical and low levels of cognitive and socio-emotional ability, not attending four-year college is the alternative associated with the highest hourly wage (ages 25-30).