The overall purpose of this case study is to examine biliteracy and its effects on a young child's orthographic and writing growth. The analysis of the kindergartener's spelling development and compositional growth in reference to both language systems indicates that biliteracy had a positive effect on the student's acquisition of English orthography and fostered a well-balanced development of composition skills in both languages. The article provides suggestions that promote biliteracy in both the classroom and home settings and encourages teachers to engage in instructional practices that value linguistic diversity. Online resources for classroom practice are also included.