A broad based across-disability schedule for identifying at risk conditions, impairments and disabilities in children ( 0-6 years). It is a short proforma which collects information through parental reports, observations of the child and screening test containing carefully selected items, questions or tasks to obtain systematic information on child's abilities. The DSS was used by 19 trained anganwadi workers to screen 3560 children from 9 slum clusters of Delhi. It reported 3315 cases as normal and 245 as having an impairment or a disability. Of these children, the investigator reviewed 219 cases of impairment. Of these 209 ' true positives' and 10 'false positives' were found. 536 normal cases were reviewed. Of these 511 'true negatives' and 25 'false negatives' were found. The DSS was found as having very high Sensitivity (0.89) and very high Specificity (0.98).