The measurement properties of any new assessment instrument should be rigorously examined and the results made available to stakeholders.The first version of the technical manual for the Teaching Strategies GOLD Assessment System (Lambert, Kim, Taylor, and McGee, 2010) presented initial reporting of reliability and validity evidence based on the information the measure provides to teachers of young children. The manual contained evidence concerning the dimensions measured by the assessment system and their interrelationships.The results outlined the measurement model used to create scale scores for each dimension. The report also contained a variety of strong statistical evidences concerning the fit of the data provided by the assessment system to the measurement model. Strong reliability evidence was presented from both classical and modern indexes of internal consistency, along with the results of a study of inter‐rater reliability.Norm tables for each scale score were provided based on three month age bands spanning ages 6 to 71 months.