In the present research was to investigate the levels and the prevalence of academic procrastination on high school, undergraduate and graduate students. In this respect, Procrastination Assessment Scale-Student (PASS) was administered to a total of 448 students who were 149 (83 female; 66 male) high-school, 150 (80 female; 70 male) undergraduate and 148 (84 female; 64 male) graduate students. The average age was 15.5 years old (SD = .56) for High-school, 20.4 years old (SD = 1.71) for Undergraduate, and 25.5 years old (SD = 2.32) for Graduate students. Results showed a significant difference among the academic levels of the students. Specifically, undergraduate students claimed to procrastinate more than graduate and high school students. High school and undergraduate students claimed to be nearly always or always procrastinator on studying for exams, while graduate students procrastinate more on writing term papers.