This narrative describes my learning process in becoming a teacher-researcher as I worked with an ELL, Jayla, who experienced a transient lifestyle. As a member of a teacher-inquiry group, the Bilingual Teacher-Research Forum I collaborated with other bilingual and ESL teachers from schools in a large city in the northeastern part of the United States. I learned to systematically investigate my practice to identify instructional strategies that promoted ELL students' literacy in English. My first inquiry was guided by one query: What instructional strategies may promote the language and literacy development of transient ELLs? In this article I describe how I investigated Jayla's literacy growth. I reflect on my transformation from a teacher to a teacher-researcher and propose some practical suggestions for teachers who teach ESL with transient backgrounds.