The Comprehensive Intervention Model (CIM) is a systemic and layered design for increasing the literacy achievement of struggling readers in kindergarten to eighth grades. The CIM is based on the belief that teachers must be experts in observing the changes that occur over time in childrenās literacy behaviors and be able to make moment-to-moment decisions based on their childrenās strengths and areas of need. The CIM uses a layered approach within a four-tier framework for aligning classroom instruction, supplemental interventions, and special education. Teachers use data (including classroom observations) to place students in the most appropriate intervention, and students may receive multiple interventions at the same time.
The CIM framework includes a combination of high-quality classroom instruction; portfolio of research-based interventions; collaborative structures for aligning instruction across classroom and supplemental settings; comprehensive literacy assessment system, and professional development provided through university partnerships. The CIM meets the goals of a Response to Intervention (RtI) method for identifying children at risk of reading failure and providing research-based, targeted instruction for reading success.