The document discusses changes to identifying students with specific learning disabilities (SLDs) under IDEA 2004. Previously, districts used a severe discrepancy model between achievement and ability, but IDEA 2004 no longer requires this and allows response to intervention (RTI) methods. Under the new law, districts must rule-in factors like inadequate achievement or progress and rule-out other causes, and must use data from observations, assessments, and instruction to determine if a student has an SLD and needs special education.