It is considered that, there are also many different factors affecting mathematics self-concept of students (such as mathematics achievement, mathematics attitude, motivation, education level of the parents, socio-economic level of the family, quantity and quality of instruction, classroom environment). As a matter of fact, some more recent studies in this area also support the existence of relationship between mathematics self-concept and mathematics academic achievement (Guay, Marsh, & Boivin, 2003; Marsh & Hau 2004). In this sense, it would be useful to repeat the study to understand the effects of other factors