This quantitative study has been derived from a five-year federal experimental research project entitled English and Literacy Acquisition (ELLA- R305P030032) which targeted Spanish-speaking English Language Learners (ELLs) receiving services in English immersion and bilingual program models. The purpose of this study was to investigate the predictive power of Spanish phonemic awareness in kindergarten on Spanish reading ability in first grade among Spanish-speaking ELLs. Fifty-five students from typical practice bilingual classrooms were included in this study. Phonemic awareness skills were measured using blending phonemes and segmenting words, two subtests from Comprehensive Test of Phonological Processing (C-TOPP). Reading ability was measured using letter-word identification and passage comprehension, two subtests from Woodcock Language Proficiency Battery-Revised (WLPB-R). Data of phonemic awareness skills were collected at the beginning and end of kindergarten and data of reading ability were collected at the beginning and end of first grade. Correlation analysis and multiple regression analysis were performed to address the research questions. The data from this study present a picture of a predictive power of phonemic awareness skills on reading comprehension in Spanish. Results from this study suggest that both skill areas of phonemic awareness in kindergarten have a moderate predictive effect on reading ability at the beginning of first grade. However, phonemic awareness skills in kindergarten did not show a statistically significant relationship to Spanish literacy at the end of first grade. Theoretical and practical implications were discussed.