Intro -- Acknowledgements -- Contents -- 1. Introduction -- 2. English in Bangladeshi Schools and Society -- 3. Bilingualism in Educational Practice: Language Policy, Alternation, and Classroom Interaction -- 4. Theoretical and Analytical Framework -- 5. Data, Setting and Methodology -- 6. Summary of Studies -- 7. Concluding Discussion -- 8. Svensk sammanfattning -- References -- Studies Included in the Thesis -- Studies -- Appendix I: Information Letter to the Students’ Parents -- Appendix II: INFORMED CONSENT FORM -- Appendix III: Transcription Key.