Important: DD is a temporary category. By age 9 (or sooner), the team must re-evaluate and determine if the student meets criteria for a specific disability category, or exit services.
Core Criteria
- Child ages 3–9 experiencing developmental delays
- Delay of 2.0 SD or more below the mean in one developmental area, OR 1.5 SD or more below the mean in two or more developmental areas
- Developmental areas: physical, cognitive, communication, social-emotional, adaptive
- Adversely affects educational performance
Instruments
Bayley-4
ABAS-3
Vineland-3
BASC-3
PLS-5