“…Across the OECD countries where the study was conducted, the average score for reading literacy, for instance, was 500 with a standard deviation of 100. Although test scores in three subjects were examined, we focus our analysis and discussions on reading literacy, partly because the results derived were almost identical, and partly because reading literacy skills have been identified as particularly crucial in the mostly mono-lingual Japanese school environment (e.g, Kalmijn, 1996;Portes & Rumbaut, 2001;Takenaka et al, 2015). Table 3 shows the mean scores in reading, mathematical and scientific literacy between native and immigrant children.…”