Reading fluency is a critical yet commonly neglected component of early reading instruction. For the large percentage of English language learners (ELLs) who are struggling with or at risk for reading difficulties, there is insufficient research available to help educators implement time-efficient interventions with these students. Using an experimental design common in field-based research, the purpose of this study was to evaluate the differential effects of a one-on-one (1/1) and small-group (SG) reading fluency intervention, both implemented with Spanish-speaking ELLs. Using three forms of data-analytic strategies (visual analysis, standard error of measurement, and randomization tests), results showed that nearly all students benefitted from the 1/1 intervention, and two students clearly benefitted from the SG intervention. Standardized reading assessments also demonstrated the positive impact of students receiving the interventions. Implications of these findings are primarily discussed with respect to school-based practice. (Contains 2 figures and 3 tables.)