A child up to age 7 who is experiencing a measurable delay in development according to diagnostic instruments and procedures fits the Developmental Delay (DD) disability category.
When evaluating a child under 36 months old, refer to the Part C DD page.
Please refer to the Evaluation Planning Guide for information on the assessments needed and who to involve.
The typical interpretation of the BASC-3 is: elevated scores = atypical performance (e.g., risk).
Because DD criteria refers to performance below a population mean, Table 1 in this document can be used to convert BASC–3 scores in order to interpret in the opposite direction — to align with DD criteria.
Guides practitioners in determining if certain DC: 0-5 conditions ("Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood") could be used, along with information from a comprehensive evaluation, when establishing potential eligibility for special education services.