By definition, a diagnostic screening measure is a brief assessment that provides predictive information about a child’s development in a specific academic area. Its purpose is to identify any children who are at-risk so that these children can receive extra support through early intervention. The screening measure is given to all children and used to identify an initial risk pool of children suspected of being at risk of developing RD. Screening information must be dichotomized into a yes-no decision of risk for each child screened. Typically, risk decisions are made by selecting a critical cut-point along a continuum of scores on a single or group of screening measures. A child scoring below the cut-point is considered at risk of developing RD, whereas a child scoring above the cut-point is not. The cut-point can be adjusted up or down to produce more or fewer positive decisions.