In 2005, elementary school children with learning disabilities came for occupational therapy service increased more than two times of 2004. Sensory integration defect resulted in risk to learning disabilities. This quasi- experimental study aimed to screen sensory integration defect in preschool children in 42 schools and to compare children’s behaviors and skills before and after provided sensory integration training program. The study was conducted between January to June 2006. There were 184 children with abnormal behavior after screening by perceptual–motor checklist. Teachers and parents trained these children with fixed activities at school and home continuously 3 months. The Sensory Integration and Praxis Test in the area of praxis and sensorimotor was used to evaluate before and after training program. The results showed that after training program, children had significantly better activities than before. In conclusion, the sensory integration training program promotes academic skills, activity of daily living, and play skills.