A field test evaluated "Auto Mechanics I" curriculum materials developed and published by the Curriculum and Instructional Materials Center, Oklahoma State Department of Vocational and Technical Education. The results and conclusions reported relate to student achievement and teacher evaluation and comments for each of the 23 units of the manual. In general, the evaluation and comments were favorable. The total for all schools indicates that on only six of the 23 units that were analyzed did students fail to reach the arbitrarily set 80 percent success level. This analysis is useful in the total evaluation of the curriculum manual as a whole; however, it fails to take into account the concepts being learned--how important they were in relation to the performance, and how difficult they were to grasp. The major conclusion of the research unit is that the curriculum meets the needs of most of the instructors. It is recommended that future studies be done in regard to student achievement as related to performance skills. (Because of the lack of response concerning the use of many of the job sheets and assignment sheets in the manual, no conclusions can be drawn from the students' achievement on the cognitive tests to determine their ability to perform the skills themselves.) (KC)