iStock-897806256
BDI-3_Logo_White BDI-3 Blog Image

Identify Developmental Delays with Confidence

The Battelle® Developmental Inventory, Third Edition (BDI-3®) is a research-backed, IDEA-aligned tool for assessing children from birth through age 7 years, 11 months. Trusted by schools, agencies, and early intervention teams nationwide, BDI-3 delivers reliable insight into developmental needs across key domains—supporting early identification and informed decision-making.

Shop BDI-3

K-12 Assessments

 
Our assessment portfolio provides educators with invaluable insights to inform personalized instruction, equitably place students and identify gaps in student potential and performance.
iStock-1390160511

Comprehensive, Integrated Insights Across Five Domains

Identify early signs of developmental delays before children enter school using one trusted tool.

  • Assess Adaptive, Cognitive, Communication, Motor, and Social-Emotional domains in a single administration.
  • Evaluate children through structured tasks, observations, and parent/teacher interviews.

 

iStock-1996370127-ai-modified-12604564-5d8f-4726-b930-057df30f3031

IDEA-Aligned & Trusted Nationwide

Compliance You Can Count On—The Chosen Assessment by Leading States and Districts

  • Aligned with IDEA Parts C & B for early childhood evaluations.
  • Inform IEP and IFSP development with valid, interpretable results.
  • Based on 40+ years of research and provides results aligned with national benchmarks.

Using BDI-3 in the Assessment of Young Children with Autism Disorder

Discover how the BDI-3 can support accurate, comprehensive assessments for young children with autism in this webinar led by Dr. Sam Goldstein. 

iStock-2205978334

Flexible Options for Modern Testing Environments

BDI-3 offers flexible administration options to fit a variety of real-world testing settings. Examiners can choose paper kits or a digital platform, with built-in customization and automated scoring that reduce effort, increase efficiency, and ensure reliable results.

 

iStock-1446924001-1

ID Crosswalk 

Find BDI-3 items linked to diagnostic criteria in the DSM-5-TR for Intellectual Disabilities (ID).

Download the Guide
iStock-2217409511

ADHD Crosswalk 

Find BDI-3 items linked to diagnostic criteria in the DSM-5-TR for ADHD.

Download the Guide
iStock-1446877402

ASD Crosswalk 

Find BDI-3 items linked to diagnostic criteria in the DSM-5-TR for Autism Spectrum Disorder (ASD).

Download the Guide

Explore BDI Crosswalks:


Find specific items that align with diagnostic criteria (e.g., DSM-5) for target conditions

iStock-1402700309-1

ADHD – resource 

Read Now
iStock-1737080874

ASD – resource

Read Now
iStock-1446877402

ID – resource

Read Now
K-12 Assessments
CLINICAL Assessments
COMMUNITY

FOLLOW US