In all areas of life, everyday reality has largely proven that during the transition from one level to another, some imbalance arises. School life is no exception to this law of nature. By changing the level of study, the learner is psychologically destabilized. More abundant subjects, alternation of new and experienced teachers, their methods of communication, and finally the change of classmates and of schools can all be disturbing to the learner. The physical and social environments can affect the learner either positively or negatively. In this study, we examined the intensity of adaptation to this level change of study as advocated by Karl PEARSON, through the BRAVAIS PEARSON and SPEARMAN formula of correlation coefficient for scientifically consistent conclusions. The study was conducted on 6th-year pupils of elementary school passing to the 1st year of secondary school in Butembo, Democratic Republic of Congo.