Parents are the prime educators until the child attends an early year setting of the school and they remain a major influence on their children’s learning throughout school and beyond. The school teachers and parents both have crucial roles to play in case of Mentally Challenged children. Nevid, Rathus and Greene (2000) agree that people who have mental retardation are often demeaned and ridiculed. However, it can be assessed that because most people find it stressful to care for a relative with mental retardation that all parents would experience stress. The Survey method was adopted for the study and the sample taken was 50 Parents of Mentally Challenged Children and 50 Teachers to assess the Teachers Attitude towards the Involvement of Parents. The Result and findings of the study observed that a high number of Parents found to have positive attitude towards their children in some way due to Teacher’s Attitude in Special Schools than in Inclusive Schools and shows that Parental Involvement of Mentally Retarded children taken from a small group of sample have positive attitude towards their life.