The aim of this research was to compare the Body Mass Index (BMI) of students with mental disabilities enrolled in special educational institutions with the Body Mass Index of students in public educational institutions, with the purpose of adapting/perfecting the learning process for the Physical Education and Sport subject at primary level in special educational institutions. During this project, we decided to verify whether there were significant differences in height, weight or BMI between

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... he two types of students (students enrolled in special educational institutions and students in the public schools of Bucharest). The research sample was composed of 120 students separated into 8 groups of 15 students each: 2 groups of girls enrolled in 5 th grade (special education and the corresponding group enrolled in public schools), 2 groups of girls in 8 th grade, 2 groups of boys in 5 th grade and 2 groups of boys in 8 th grade. Therefore, comparisons were made between these two types of students, corresponding to their age and gender. Regarding the statistical methods, the mathematical SPSS program was used by applying the nonparametric Mann-Whitney U Test. The results of the comparisons showed that there were differences in height and weight between the students enrolled in special and public educational institutions. However, in terms of Body Mass Index, there were no significant differences between students.