INTRODUCTION Cerebral palsy (CP) is a chronic condition that affects children and has adverse impact on social, physical activity, and participation in daily life. Functional impairments developing due to physical, cognitive, emotional, and social disorders prevent children with CP from performing their roles in society^. Families of children with CP fail to fulfill their social role concerning the children and themselves because of children’s continuous requirements for special care, frequent medical checkups, and continuous physiotherapy treatment and to take over their roles in society. Sitting is the earliest upright posture achieved during normal development. The capacity to maintain balance in sitting is a prerequisite to the activities of daily living. Core stability is the ability to control the position and movement of the central portion of the body. Children with cerebral palsy have poor core control, which affects sitting balance. Impaired sitting balance affects the level of participation in daily activities and increases the burden on the mothers thus affecting their quality of life. The loss of trunk control is a very important element that causes difficulties not only in sitting but also while playing in sitting positions, functional hand movements such as eating and maintaining activities of daily living. Children with cerebral palsy may not complete these movements sufficiently due to poor posture, weak trunk muscles, and insufficient trunk stability. Delay in the acquisition of neck and trunk response affects the development of muscular strength and limits the overall activity of the child during sitting, playing, and feeding. This leads to the loss of other milestones that might affect the overall quality of life of the child and increase the caretaking burden Aim:    The aim of this study is to evaluate the effect of sensory perceptual-motor core stability exercise program to gain sitting milestone in children with cerebral palsy and thereby improving the quality of life of their mothers Research Hypothesis Sensory Perceptual Motor Core Stability program is effective for improving the sitting control in children with cerebral palsy and thereby improving the quality of life of their mothers. Primary Objective: To evaluate the  effect of sensory perceptual motor core stability exercise program for improving sitting control in children with cerebral palsy as measured by trunk control measurement scale (TCMS) Secondary Objective        To evaluate the effect of improved sitting control among the children with cerebral palsy on the quality of life of their mothers as measured by WHO QOL BREF.  METHODOLOGY      The study is double blinded, Randomised Controlled Trial to be conducted in the community and special schools at Puducherry. The outcomes are to be assessed at baseline, 6 months and at 8 months. The research hypothesis is sensory perceptual-motor core stability training will improve sitting control in cerebral palsied children as measured by the trunk control measurement scale (TCMS).  The study intends to calculate the mean score of TCMS in both groups. As sitting control is the primary objective of the study the mean change in the TCMS, score will be analysed statistically to find out the significance between both groups. The study expects the mean change in the experimental group will be significant when compared with the control group and thus will benefit cerebral palsied children to gain sitting control. The study expects a considerable proportional of children achieving and improving sitting control and thereby a proportional improvement in their mothers quality of life as measured by WHOQOL – BREF (World Health Organisation Quality of life)