Abstract: To develop writing competence necessitates developing its sub-skills and its constituents concurrently. The present study endeavored to find a) the levels of difficulty of various writing skills for Iranian EFL students, and b) the possibility of any difference between males' and females' performances as far as their writing skills are concerned. Randomly selected 106 students from Tabriz Islamic Azad University and Azarbaijan Shahid Madani University (53 males, 53 females) were given two TEOFL topics to write. Statistical analysis of the participants' performance indicated that a) the five writing skills pose different levels of difficulty for Iranian EFL learners; the ability to address the writing task the easiest and the ability to display facility in language use the most difficult one, and b) female students support the thesis with more appropriate details while male students organize and develop their essays more appropriately.