State and local education agencies are calling for the expansion of evidence-based assessment to improve the quality of early childhood education classrooms. However, few conceptually and empirically sound tools exist. This is particularly true for young preschoolers, or students who are more than one year away from the age cutoff for kindergarten entry. This document presents preliminary results for validity analyses of IGDI assessments designed for 3- year-olds (IGDI3 measures) using correlations with criterion measures (TOPEL, PPVT, GRTR, QUILS). In this study, 136 students completed at least one criterion assessment and IGDI from a corresponding domain. Sample characteristics are presented as well as results of correlations of IGDIs with criterion measures. (author abstract)