Determining the ethnic differences in academic performance among immigrant students is important in terms of adapting them into the system they live in. Examining the variables related to students' performance will be a guide in overcoming the issue. The purpose of this study is to examine the direct effect of economic, social, and cultural status (ESCS) on science performance and the indirect effect of ESCS on the relationship between science dispositions and science literacy in Canadian immigrant students using hierarchical linear modeling. Data were obtained from Program for International Student Assessment (PISA) 2015 science literacy test and student questionnaire and data sets were provided from the official website of PISA. The results of the research show that ESCS had a direct and indirect effect through science dispositions with medium to large on science performance of immigrant students. The impacts of significant variables were discussed and implications for further research were provided.