out of the countries for which a comparison could be made countries significantly improved scores between the two rounds and none showed significant declines schulz etal country scores on the index increased significantly between and female students those with greater interest in civics and political matters and those with greater civics knowledge held more positive attitudes schulz et al an analysis using iccs data had shown that students who perceived the classroom environment as open and valued participation in school were more likely to endorse equal rights for all ethnic groups trevino et al