What is the discrepancy model? The discrepancy model is a way to capture and compare a student’s scores on different types of tests. It compares assessments of a child’s intellectual ability (IQ) with how much progress they’re making in school (academic achievement).

The discrepancy model is an approach used in special education to determine whether a student has a specific learning disability (SLD). This model compares a student’s cognitive ability or IQ to their academic achievement in specific areas such as reading, writing, or math.

Standardized tests of ability and achievement are often used. If a student’s achievement scores are sufficiently below his ability scores, it indicates that the student has the severe discrepancy required for special education eligibility under this model.

Appendix A provides the severe discrepancy regression formula, and Appendix B contains an updated recommended list of tests and subtests for use within severe discrepancy eligibility determinations.

Severe Discrepancy model for special education eligibility is the difficulty associated with the definition of “adequate progress” within each tier of the RTI model (Zirkel & Thomas, 2010). Using this method stipulates that if a student does not make adequate progress he or she would then be referred for a special education evaluation in

The IQ-achievement discrepancy model is the traditional method used to determine whether a student has a learning disability and needs special education services. The discrepancy model is based on the concept of the normal curve (click here for a review of the normal curve).

The discrepancy model: Through the traditional discrepancy model, a learning disability has been determined primarily through a combination of cognitive (intellectual) and academic (achievement) testing. When a 'severe discrepancy' between ability …

Current identification approaches can be classified into three broad models: (a) discrepancy approaches, (b) response-to-intervention (RTI) and problem solving approaches, and (c) the processing deficit approaches.

The severe discrepancy method is widely used across the state for evaluation and identification of specific learning disabilities. A review of literature reveals multiple, long -debated issues with use of the severe discrepancy model. These issues include, but are not limited to, validity of test

severe discrepancy is determined by comparing age­based standard scores of ability and achievement. A regression formula is used to determine the severity of the discrepancy. A severe discrepancy is defined as “a minimum of 1.75 standard deviations difference, taking regression and 1.0 standard error of measurement into account.”