Results from studies utilizing the General Aptitude Test Battery (GATB) to predict success in specific vocational training programs authorized by the Manpower Development and Training Act of 1962 are summarized. The summary involves over 1,200 trainees from a number of states in a variety of occupational areas. Trainees from all included studies were combined and then subgrouped on the basis of number of years of formal education claimed. Good prediction was obtained for the 0–7, 8, 9, 10, 11, and 12 years‐of‐education groupings. The prediction obtained with the 13–16 years‐of‐education grouping is not at an acceptable level of significance, but this may be a result of the small sample available for this grouping. The results are seen as supporting Manpower Administration efforts to devise ways in which aptitude tests can be used to help match applicants with low levels of reported educational attainment with suitable vocational or training op