The Inventory of Early Development III (IED III) is a comprehensive tool that contains over 100 assessments that are aligned to state and national standards as well as IDEA requirements. The tool can be used to provide ongoing assessment, monitor progress, and write IEPs for students from birth to grade 8. The IED III offers both criterion-referenced and norm-referenced measures.
Counting, Number Sense, Spatial Sense, Representation, Number Properties and Operations, Measurement, Risk Indicator
An estimated duration of each subtest is not provided.
IED III Standardized Kit (Includes IED III Standardized Inventory, Standardization and Validation Manual, 20 Standardized Record Books, IED III Accessories, durable canvas tote): $349; Additional Assessory Kit: $69. IED III Classroom Kit (Includes criterion-referenced IED III Inventory, 20 Record Books, IED III Accessories, durable canvas tote): $349
Free on demand training videos available
Resources on Psychometric Properties
Instrument Use in Peer-Reviewed Studies
Taylor, A. G., & Moniz-Tadeo, B.-J. (2012). The Impact of an Invitational Environment on Preschoolers with Special Needs. Journal of Invitational Theory and Practice, 18, 19–25.