The purpose of this study was to understand the prevalence of self-regulated learning (SRL) in urban, adolescent ELLs, to describe SRL in these ELLs, understand the relationship between SRL and contextual variables relevant to ELLs (i.e., language proficiency and acculturation), and the relationship of SRL with ELLs' opportunity to learn strategies as well as their academic achievement. A cross-sectional design was developed within an ecological framework to gather self-report data from 79 (53% female) ELLs in an urban high school who consented to participate. The mean age was 17.23 and mean grade level was 10.74. Measures were translated to ensure cultural and linguistic appropriateness for this population. Paper surveys were administered at school and took 30 to 40 minutes to complete. Data were analyzed using SPSS 25 and interpreted using an ecological framework. The data supported analyses of variance and partial correlational analysis that provided answers to the following research questions: What are urban ELLs' self-reports about how they self-regulate their learning? Are there differences in ELLs self-report about metacognition vs. self-regulation? To what extent do ELLs' self-reports about opportunities to learn strategies relate to SRL? The data did not support proposed regression analyses to examine the relationship between SRL and language proficiency, acculturation, and academic achievement. ELLs self-reported significantly greater metacognition than self-regulation with respect to their learning. Females scored higher than males, and older students scored higher than younger students on SRL as a whole, and on their ability to regulate their learning. Gender and age-related differences on metacognition were not significant. Implications for theory, research and practice are discussed along with limitations of this study and future directions.