Many states now mandate early screening for dyslexia, but vary in how they address these mandates. There is confusion about the nature of screening versus diagnostic assessments, risk versus diagnosis, concurrent versus predictive validity, and inattention to indices of classification accuracy as the basis for determining risk. To help define what…

Assessment of student performance is critical for developing effective instructional policy and designing programs responsive to individual students' needs. To gauge the adequacy of available assessment tools for achieving these ends, the Reading First Assessment Committee (RFAC) developed criteria for evaluating the adequacy of reading measures…