The Individuals with Disabilities Education Improvement Act (IDEA) was reauthorized by the U.S. Congress in 2004, yet ongoing regulatory efforts are required to determine its operationalization and implementation. Of particular concern to school psychologists and others involved in the educational process are the guidelines for identification of children with specific learning disabilities (SLD). Two seemingly opposite camps have been arguing for either a response-tointervention (RTI) approach for SLD identification or a methodology that includes comprehensive evaluations for SLD identification and intervention purposes. In this article, the authors propose a resolution to these critical issues by emphasizing a multitiered approach to serving children with learning problems-one that begins with RTI, but then provides for comprehensive evaluation of cognitive processes if RTI methods are not successful in ameliorating the child's learning difficulties. If a child fails to respond to intervention and demonstrates a deficit in the basic psychological processes following comprehensive evaluation, both the definitional criteria for SLD and the method for determining SLD eligibility will be addressed. This methodology incorporates the best aspects of both the RTI and comprehensive evaluation perspectives to forge a balanced practice model that ensures diagnostic accuracy and optimizes educational outcomes for children with SLD. © 2006 Wiley Periodicals, Inc.As this article is being written, events are unfolding that could profoundly shape the future of school psychology. Passed by Congress in 2004, the reauthorized Individuals with Disabilities Education Improvement Act (IDEA) includes language that must be operationalized to reflect the intent of the law. Implementation will be equally challenging because this language must be examined within the context of sound school psychology and special education science and practice. Seemingly opposing factions have called for either a response-to-intervention (RTI) approach or one that includes comprehensive evaluation of basic psychological processes prior to classification of children with specific learning disabilities (SLD). These apparently disparate approaches should not necessarily lead to a politicized professional schism. Instead, both positions should be scrutinized for their individual merits and limitations, with the result being a model that incorporates the best tenets of both perspectives in a balanced practice model that maximizes SLD diagnostic accuracy and optimizes educational outcomes for this heterogeneous and enigmatic population.Both the RTI and comprehensive assessment positions help address long-standing problems surrounding accurate identification of children with SLD. Whether the approach is a standard protocol or a more flexible problem-solving model (see Fuchs, Mock, Morgan, & Young, 2003), the RTI methods advocated by proponents are a welcome and long-awaited addition to the field. The use of research-based instruction, regular student progress mo...