This study examined the convergent validity of the parent and teacher versions of the Early Childhood Behavior Problem Screening Scale (ECBPSS) with the Child Behavior Checklist (CBCL) and the Caregiver-Teacher Report Form (C-TRF), respectively. Data were collected on a sample of preschool and kindergarten students (n = 149) from two medium-sized cities in the Midwest. Analyses of both the parent and teacher versions of the ECBPSS were correlated with the corresponding Internalizing, Externalizing, and Total Problem scale scores of the CBCL and the C-TRF. The present findings and future research directions and limitations are discussed. (Contains 3 tables.)