Few studies have quantified the effects on academic performance; none has investigated, as this study does, the effects of immigration, home language, and school mobility on academic development over time. What makes this study unique is its melding of sociological and psychometric perspectives – an approach that is still quite new. Logistic regression was used to analyze data from Ontario’s 2007-2008 Junior (Grade 6) Assessment of Reading, Writing and Mathematics, with linked assessment results from three years earlier, to investigate students’ academic achievement. The focus of this study is on whether the students maintained proficiency between Grades 3 and 6 or achieved proficiency in Grade 6 if they were not proficient in Grade 3. The results indicate that Grade 3 proficiency is the strongest predictor of Grade 6 proficiency and that home language or interactions with home language are also significant in most cases. In addition, students who speak a language other than or in addition to English at home are, in general, a little more likely to be proficient at Grade 6. Most students who were born outside of Canada were significantly more likely than students born in Canada to stay or become proficient in Reading, Writing, and Mathematics by Grade 6. These results highlight the importance of considering the enormous heterogeneity of immigrants’ experiences when studying the effects of immigration on academic performance.

Few studies have quantified the effects on academic performance; none has investigated, as this study does, the effects of immigration, home language, and school mobility on academic development over time. What makes this study unique is its melding of sociological and psychometric perspectives – an approach that is still quite new. Logistic regression was used to analyze data from Ontario’s 2007-2008 Junior (Grade 6) Assessment of Reading, Writing and Mathematics, with linked assessment results from three years earlier, to investigate students’ academic achievement. The focus of this study is on whether the students maintained proficiency between Grades 3 and 6 or achieved proficiency in Grade 6 if they were not proficient in Grade 3. The results indicate that Grade 3 proficiency is the strongest predictor of Grade 6 proficiency and that home language or interactions with home language are also significant in most cases. In addition, students who speak a language other than or in addition to English at home are, in general, a little more likely to be proficient at Grade 6. Most students who were born outside of Canada were significantly more likely than students born in Canada to stay or become proficient in Reading, Writing, and Mathematics by Grade 6. These results highlight the importance of considering the enormous heterogeneity of immigrants’ experiences when studying the effects of immigration on academic performance.