To examine factors predictive of successful 4th-grade 2nd language reading, I used a hierarchical multiple regression equation that included Texas Assessment of Knowledge and Skills (TAKS) Reading percentile rank as the criterion variable. The equation tested 5 predictor variables: English language proficiency, years of U.S. schooling, and 3 informal reading inventory scores. The full regression equation indicated that the composite predictor variables accounted for 35% of the variance in TAKS Reading percentile rank, English language proficiency and years of U.S. schooling accounted for 25% of the variance, and English language proficiency accounted for 13% of the variance. Pedagogical implications are discussed. (Contains 3 tables.)