The results indicated that at the student level, different aspects of student SES (i.e. number of books, the possession of computers, paternal, and maternal educational achievements were positively related to Japanese student math achievement. At the school level, two aspects of school SES (i.e. less populated schools and economically disadvantaged schools) were negatively related to Japanese student math achievement.Especially, Japanese students who attended schools in less populated areas were more disadvantaged relative to those who attended schools in more populated areas. None of the cross-level interactions were significant, but the random effect for computer slope was significant.
ivThe results of the proportional reduction of prediction error explained by both student and school SES were small, meaning the residual variances at student and school SES were small. Small school SES residual variance may indicate a stratification of public middle schools.The findings also showed that maternal educational background was related to their children's odds of participation in extra math lessons after schools. When mothers were more educated, Japanese students were more likely to participate in extra math lessons. From the results of the two study findings, the maternal level of education influenced Japanese students' academic areas.The theoretical applications in the contexts of Japanese culture were also discussed.v