The purpose of this study was to evaluate probabilistic reasoning of seventh-grade students (N=167) studying at randomly selected three middle schools that served low and middle socioeconomic areas in a city of Turkey. "Probabilistic Reasoning Test (PRT)" was developed and used as a data collection tool. In analyzing the data, participants' scores of the test were computed and their probabilistic reasoning levels were determined. Sample responses of some students regarding any question (Q14) in the test were presented directly and discussed. Analysis of data showed that most of the participants had medium (30.5%) and high (32.9%) level of probabilistic reasoning. Here, it is possibly inferred that in general terms, the probabilistic reasoning level of the students is medium and high. It can also be suggested that thanks to open-ended probabilistic problems that students try to present a solution way instead of focusing on multiple-choice answers, they can reason more often.