This study compared the effects of Reading Mastery Fast Cycle and Horizons Fast Track A-B on the reading achievement of elementary aged students with mild disabilities. State assessment data, scores on a standardized achievement test, and teacher interview responses were evaluated. Results indicate that students in the Reading Mastery group scored slightly higher than students in the Horizons group in measures that assess decoding skills; however, these differences were not statistically significant. Results were comparable between groups in the areas of phonological awareness and comprehension. (Copyright © 2011, National Institute for Direct Instruction (NIFDI). All rights reserved).