Many students respond positively to research-based interventions that are implemented with fidelity -- according to methods demonstrated to be effective. Yet, a small number of students do not benefit sufficiently from these interventions. These students require more intensive instruction designed to meet their individual instructional needs. Data-Based Instruction (DBI) provides a framework for teachers to individualize instruction systematically and effectively. Researchers have demonstrated that, when teachers implement DBI with fidelity, their instructional decision-making improves, and student achievement increases.