The present research aims to use the Samjima model for two- Parameter, which is one of the Item response theory models in Calibrating the scale of academic burnout, with knowing the effect of some variables such as sex (male/ female), academic specialization (scientific/ literary) and grade (one/ two/ three); To achieve the objectives of the study, The researcher prepared a scale which consisted of (73) item, It was applied to a sample of (1,088) of high school students. Data were analyzed according to Graded Response model by using SPSS program and eirt- Item Response Assistant for Excel program, and Easy Estimation Ver.2.1.4 program; The results of research showed that the assumptions of graded response model have been achieved for the scale, and that the range of values of difficulty and discrimination parameters of the items fall within the acceptable limits of the assumptions of the graded response model, and there is a match for all the items of the scale for the expectations of the graded response model except for two items, which confirms that the scale has good psychometric properties in the light of the graded response model, The scale in its final form consist of (71) items divided into three dimensions (Exhaustion due to the demands of Studying, Academic Apathy, and Reduced Personal Academic Accomplishment), and the results of the research have shown that there are no statistically significant differences between the mean scores for both males and females in the total score of academic burnout scale, while there are statistically significant differences (p< 0.01) between the mean scores of students with ascientific and literary specialization in the total score of academic burnout and its sub-dimensions in favor of the mean scores of students with Literary specialization, and there are also statistically significant differences (p< 0.01) between the mean scores of students in the overall grade of the academic burnout scale due to the grade, The researcher recommends using the item response models in the analysis and calibration of other psychological and educational tests.