This paper presents new evidence regarding the benefits of retraining prime-aged adults by analyzing the impacts of community college schooling on displaced workers in Washington State during the 1990s. The authors also conducted a similar analysis of a small program that provided community college courses to workers displaced from their jobs during the mid-1980s in Alleghany County, (Pittsburgh) Pennsylvania. The samples were constructed by matching displaced workers' state unemployment insurance earnings records to their community college transcripts. The samples included only workers who had three or more years of job tenure when they were permanently displaced from their jobs. The Washington State sample consists of 21,000 workers displaced between 1990 and 1994 who enrolled in at least one community college course, and 64,000 displaced workers who did not take courses. The Pittsburgh sample consists of 3,200 displaced workers who took part in a county training program, and 3,500 displaced workers who did not enroll in the program. Both samples include dropouts in the samples of workers who enrolled in retraining programs. Findings of this study indicate that one year of community college training raised the hourly wage of both male and female workers by less than 2%. But earnings increased 5-6% because of increased hours worked due to training. (Contains 8 tables and 25 references.) (NB)