Multi-tiered System of Supports


Arizona State Statute allows for the following methods in determining eligibility under the category of Specific Learning Disability (SLD):

  • A discrepancy between achievement and ability;
  • The child’s response to scientific, research based interventions; or
  • Other alternative research-based procedures.

Local Education Agencies that choose to allow the use of a child’s response to scientific, research based interventions, or Multi-tiered Systems of Support (MTSS) in determining SLD eligibility must ensure the amount and nature of student performance data to be collected is;

  • sufficient to determine eligibility and develop a data driven IEP; and
  • clearly documented in the Multidisciplinary Evaluation Team report


Director of State Initiatives
Jeff Morton

Exceptional Student Services/School Improvement
Arizona Department of Education
3100 N. West St., Suite #300
Flagstaff, AZ 86004
Phone (928) 637-1870