“…A number of studies have investigated the technical properties of measures designed for monitoring early literacy progress, including their predictive validity and screening accuracy (e.g., Catts, Petscher, Schatschneider, Bridges, & Mendoza, 2009; Clemens, Shapiro, & Thoemmes, 2011; Elliot, Lee, & Tollefson, 2001; Goffreda & DiPerna, 2010; Jenkins, Hudson, & Johnson, 2007). Several studies have collected data with kindergarten students on a progress-monitoring basis, yet analyses reported concurrent or predictive validity of point estimates rather than the validity of slope of improvement (e.g., Chafouleas & Martens, 2002; Elliot et al, 2001; Good et al, 2004; Oslund et al, 2012; Ritchey, 2008). Fuchs (2004) described work that investigates the properties of the static score (i.e., point estimates, data collected at one point in time) as Stage 1 research, which has received the majority of attention in research studies (Fuchs, 2004; Fuchs & Vaughn, 2012).…”