The effect of selected driver and instructional variables on attitude change of school bus drivers was examined. A total of 113 male and 69 female in-service Texas school bus drivers participated. The course of instruction, totaling 20 classroom hours, consisted of 11 units related to driving efficiency. Driver attitude was measured by a multiple-choice check list, administered prior to and following the course of instruction. A significant positive change occurred in those variables related to driver age, educational attainment, and number of classroom participants. Those variables involving course participation status and sex difference resulted in no significant positive attitude change. These findings may prove helpful in designing training programs for school bus drivers.