This study estimate and evaluate the status of motor development in children and adolescents with intellectual disabilities, within upper grades of Special elementary (aged up 11-12 to 14-15) and Special secondary children (up 16 to 21) years of age. The basic purpose of this study was to determine the significance of gender (male/female) difference, grade-level differences in the basic motor development, related to the different IQ-Intellectual maturity sub-categories. Additionally, of special interest in this study was to establish the correlations among variables for the estimation of motor development, (PFT), chronological age (Age/M), educational performance/academic achievement (ScSs) and intellectual maturity (IQ) of the participants.