History courses from the middle school process to the last year of the university are among the main courses that candidate teachers should learn. As history classes address comprehensive and verbal skills, it is one of the most challenging courses for social studies teachers. In this research, it was aimed to determine the history courses which the most and least difficult of the candidate teachers by using the dual comparison method. In this study, a scaling study was conducted to determine the level of difficulty of social studies teacher candidates in the history lessons with 5th state equation. This research does not aim to generalize the information obtained from the sample to the universe. Therefore, the study is basic research as well. Sixty candidate social studies teachers who attended 3rd and 4th grade in the 2018-2019 academic year at the Faculty of Education of Bolu Abant Izzet Baysal University participated in the study. As a data collection tool, a measurement tool including a dual comparison developed by the researchers was used. While the most difficult with the paired-wise comparison is the Contemporary World History, the easiest course is Atatürk’s Principles and History of Turkish Revolution.