This definition appears very rarely
The Early Literacy and Learning Model (ELLM) was evaluated in a national experimental study (PCERC, 2008) and in a complimentary experimental study that took place simultaneously with the first-year of the national pilot study (Cosgrove et al. , 2006). The national first-year pilot study was comprised of a subset of the classes sampled for the complimentary experimental study. The sampled preschools in the studies included full-day Head Start, subsidized, faith-based, and public school-based early intervention programs located in three geographic areas of Florida.