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Results of international achievement surveys such as the Programme in International Student Assessment have consistently reported an achievement gap between immigrant and non-immigrant student populations around the world. This paper unpacks this persistent achievement gap by examining key characteristics that influence the performance of first- and second-generation immigrant students as well as the policies and practices that are associated with enhanced educational outcomes. A multi-layered framework is proposed to help policymakers juxtapose key characteristics of their immigrant students' achievement against individual, family, school, community, and host society characteristics and policies. The discussion also underscores the importance of connecting this multi-layered framework with other important sectors within governments such as those responsible for the economy, health, social protection, and immigration. This paper also examines limitations with current large-scale data sets and the implications for research and policy analysis.

This paper takes advantage of the Taiwan Assessment of Student Achievement data set to empirically evaluate whether the test score differentials between pupils with immigrant and native mothers are substantial across subjects, grades and years. Our results show that there exist test score differentials between the two groups after controlling for the students' individual characteristics and family background. The Chinese, Maths and English subjects exhibit larger test score gaps relative to Science and Society. We also find that the academic gaps between native students and pupils with mothers from Southeast Asian countries tend to widen, while the students' performance is about the same as that for native students if their mothers are from mainland China, confirming that the language proficiency of immigrant mothers significantly affects pupils' learning. Our empirical results may suggest that remedial teaching (or an equivalent preferential policy) for the lower-grade pupils with immigrant mothers might be required to create a fair environment for learning, and such a policy should take the nationality of those foreign mothers into account.

A small group of high-performing East Asian economies dominate the top of the Programme for International Student Assessment (PISA) rankings. This has caught the attention of Western policymakers, who want to know why East Asian children obtain such high PISA scores, and what can be done to replicate their success. In this paper I investigate whether children of East Asian descent, who were born and raised in a Western country (Australia), also score highly on the PISA test. I then explore whether their superior performance (relative to children of Australian heritage) can be explained by reasons often given for East Asian students' extraordinary educational achievements. My results suggest that second-generation East Asian immigrants outperform their native Australian peers by approximately 100 test points. Moreover, the magnitude of this achievement gap has increased substantially over the last ten years. Yet there is no 'silver bullet' that can explain why East Asian children obtain such high levels of academic achievement. Rather a combination of factors, each making their own independent contribution, seem to be at play. Consequently, I warn Western policymakers that it may only be possible to catch the leading East Asian economies in the PISA rankings with widespread cultural change.