This study compared the effects of two reading programs, Horizons Fast Track A-B and Silver, Burdett, & Ginn, on reading achievement of first grade students. Woodcock Reading Mastery subtests and DIBELS measures were used to measure reading achievement. Results indicate that the students in the Horizons group significantly outperformed the students in the Silver, Burdett, & Ginn group. (Copyright © 2011, National Institute for Direct Instruction (NIFDI). All rights reserved).