Intervention Merced City School District has developed a multi-step approach to providing services and interventions to students who struggle with learning and behavior.  The district's Response to Intervention (RtI) model is a three-tiered scientific, researched-based process to provide intervention early and often with increasing intensity.  Students receive curriculum and educational interventions that are proven to be effective with most students.  The students' progress is monitored continually to evaluate the effectiveness of the instruction and learning.  Each student's progress is tracked over time to determine if the student is making adequate progress, needs further intervention or to determine whether a learning disability may be present, initiating a special education referral.  The district's RtI model of intervention is present at every school at every grade level kindergarten through eighth grade.