The purpose of monitoring progress is to determine the effectiveness of an intervention plan on student learning. When data show students are progressing, interventions are maintained until students meet identified goals. When data show students are not progressing, a change in intervention is necessary (Fuchs, Compton, Fuchs & Davis, 2008). When changes are made to intervention plans based on data, intervention or phase lines should be placed on student graphs to indicate the change. Students receiving Tier 2 support should be assessed weekly or every other week, while students receiving Tier 3 support should be assessed weekly.