The district used a three-step process to place third, fourth, and fifth grade students into Tier II reading groups prior to this study. Three times per year, all students were administered the benchmark screenings from the Dynamic Indicators of Basic Early Literacy Skills (DIBELS; Good & Kaminski, 2002). If they scored below a threshold (“some risk” or “at risk”) and displayed other difficulties in reading (e.g., low scores on the state reading test or difficulties observed by classroom teachers), an individualized literacy plan was developed. For most students, this plan included Tier II intervention with Corrective Reading: Decoding (Engelmann et al., 1999) as the primary intervention.