Preschool Intervention Clinic is functioning on all Wednesdays from 9.00 am – 1.00 pm except on holidays. The beneficiaries of Pre-School Clinic of CDC are children who had problems during the neonatal period. The overall developmental screening of children will be done in this clinic by using screening tools for finding out the delay and problems in development. After screening they are called for IQ assessment and interventions. The tools used in this clinic are Nursery Evaluation Scale Trivandrum (NEST), Denver Developmental Screening Test (DDST), Receptive Expressive Emergent Language Scale (REELS), Vineland Social Maturity Scale (VSMS), Binet–Kamat test of intelligence Wechsler Intelligence Scale for Children and Seguin Form Board Test