The project has the following objectives: 1) The Fourth Study on the Progress in Chinese and English Reading Literacy Study (BR2013) is the fourth study in a series (following BR2004, BR2007 and BR2010). The present study operates in a three-year cycle of assessment and measures trends in children's bilingual reading literacy attainment in relation to policy and practice changes. The data collection period will be conducted from April to June in 2013. 2) The effects of using Cantonese or Putonghua as the MOI on Chinese reading literacy will be robustly analyzed. 3) The impact on students’ bilingual reading performance of implementing “reading across the curriculum” policies in Chinese and English will be investigated. 4) The impact on bilingual reading performance of students’ reading habits, self-concept as readers, attitudes towards reading, teaching methods and classroom reading activities, home reading environment and parents’ attitudes toward reading will be investigated.