The purpose of the study was to investigate the beliefs of high school students about mathematics. The study was conducted in Ankara with 425 tenth-grade students. The “Beliefs about Mathematics Scale” (BaMS) was used as a measuring instrument. The hypotheses of the present study were tested by using analysis of variance at a significance level of 0.05. The results of the study indicated that: 1. There were statistically significant differences among the mean scores of students enrolled in different kinds of high schools with respect to beliefs about mathematics; 2. There were statistically significant mean differences among students who had different mathematics achievement levels in terms of beliefs about mathematics; 3. There was no statistically significant mean difference between male and female students regarding their beliefs about mathematics.

Keywords: Beliefs, beliefs about mathematics, gender, high school students