Frontmatter -- Contents -- Acknowledgements -- Chapter 1. Introduction -- Chapter 2. Immersion Classroom Research and Methodology of this Study -- Chapter 3. Inter-American Magnet School -- Chapter 4. Fifth-Grade Language Use and Proficiency -- Chapter 5. Identity Investments in Fifth Grade -- Chapter 6. Language Use in Eighth Grade -- Chapter 7. Spanish Proficiency in Eighth Grade -- Chapter 8. Identity Investments in Eighth Grade -- Chapter 9. Conclusions -- Epilogue -- References