Responds to Kranzler and Keith (this issue) by providing data from a data-driven approach that suggests the Cognitive Assessment System (CAS) has validity. Provides evidence that the interpretation of the planning, attention, simultaneous and successive (PASS Scales) theory described in the "CAS Interpretive Handbook" is well supported.…

To be indispensable, any professional who works within the school environment must have expertise that others do not have. In the case of psychologists in schools, they must be able to uncover, use, and communicate essential and necessary information about students which facilitates academic and personal growth either directly or indirectly and…