The study aimed to reveal the level of perceived self-efficacy and achievement motivation among a sample of third year secondary school students, on a final sample of 131 students; they were selected using a simple random sample method from the academic year 2021-2022. The researchers used the descriptive correlational method. in order to achieve the desired goals of the research , two tools were applied, namely “ the perceived self-efficacy questionnaire” and the achievement motivation scale” ,which consist of 40 items. the results revealed that the level of perceived self-efficacy and motivation in achievement among the third- year secondary school students of “KatebYacine” secondary school in the state of SETIF is low. With a correlation between each of the perceived self-efficacy and motivation in achievement, and the results revealed that there were no differences statistically between male and female studentsof “katebyacine” secondary school in the state of SETIF.