The Individuals with Disabilities Education Improvement Act(IDEIA, 2004) describes the use of
research-based identification, referral and prereferral procedures, interventions, curricula, and practices.
Some professionals refer to scientifically based research practices as “evidence-based practices(EBP)”.
And the revised law is different from the previous version in at least one important respect. The key
point is discouraging the use of IQ-achievement discrepancy model, or encouraging RTI(Response to
Intervention) model in identifying children with learning disabilities(LD). In essence, much of RTI
assessment is progress monitoring. It is a form of dynamic assessment because its metric is change in
student's level of rate of learning. Such information assists practitioners' efforts both to design early
intervention and to identify special-needs children. Like this, the RTI model is closely connected with
the EBP, identification, early intervention, progress monitoring, instructional adaptation, and dynamic
assessment. And the various special needs of the students with disabilities call for diverse assessment
accommodations to allow them to participate in the assessment. The necessity, meaning, and the
current practices of assessment accommodations are presented. Lastly, some matters to be attended to
are discussed.