The relationships between dependent and independent variables were examined through multiple regression analysis. According to the results, the independent variables at the level of 6th grade explains approximately % 43 of the total variance in the dependent variable, at the level of 7th grade explains % 53 and at the level of 8th grade explains % 49. It was concluded for independent variables of grade 6 and 8 that dependent variable explained only the variable of "written exam" significantly, all variables of grade 7 independent variables explained all variables other than "project" variable significantly.