RESUMO
This study was designed to identify reasons that led to students' irregular attendance at their theoretical and practical classes. The total number of the studied samples was 200 university staff members and 300 students from bachelor grades. The results revealed that attending distinguished lectures at other colleges and students' commitment to private lessons were the most important reasons for students' irregular attendance with 70.3% and 61.7%, respectively, particularly among the 6th grade students. It was indicated that 81.7% of the students stated that expatriation and repeated traveling helped in students' irregular attendance. The study also indicated that not using MCQ method in examination, expanding of regulations of facilitating success and not specifying a part of total scores for regular attendance were among the most important reasons for students' irregular attendance. A statistical significant difference between staff members was detected regarding expanding of regulations of facilitating success