The report presents the fourth evaluation of the Ohio Career Development Program for Grades K-10. Although career education programs appeared to be successful on observation, the administration of curriculum-based tests in 1973 showed no major difference between results of the program and nonprogram students. Policy studies in education developed and administered field-based tests in order to test the hypothesis that program students were learning more than nonprogram students, but that program students could not fully demonstrate their knowledge on curriculum-based tests. The outcome of this project resulted in a set of test results for grades 3, 6, 8, and 10 in seven cities, and a set of test instruments for these grades with potential for statewide use. Program students did score significantly higher than nonprogram students on both the cognitive and affective tests. The field-based method of creating tests successfully identified what program students were learning as well as what they were not learning. The tests also told in what ways program students were superior to, equal to, and inferior to nonprogram students. The report details the background of the study, methodology, outcomes of the test development procedure, and findings. Thirty-five of the tabulated test results are appended. (Author/RG)