To examine the contributions of specific kinds of occupational training to the productivity of workers with different levels of formal schooling, interviews were used to collect data on general education, trade training, work experience, environmental characteristics, and general ability from 598 turners, millers, and grinders in two factories in Bangalore, India. There were significant differences in the productivity of workers with different kinds of training, but the best producers were workers with similar levels of education and environmental backgrounds and with mainly informal in-plant training. Workers who had formal training in technical schools were promoted within skilled occupational categories more rapidly than workers with primarily in-plant training, which suggests that promotion is determined more by a certificate of qualification than by actual job performance. The differences in productivity between workers with primarily outside training and other workers seem to reflect differences in attitudes and behavior unrelated to job knowledge and skill. (SB)