350 7 to 14-year-old students of a special school for children with severe speech and language disorders (SLD) were tested through psychological, neurolinguistic and clinical methods. It was a longitudinal study. During 4-5 years of studying at the special school, the majority of speech and language impairments reduce and communicative skills grow up. But the other students demonstrate regress of adaptation skills, intellectual efficiency and increase in restlessness, aggressive behavior, mood disorders, and neurotic disorders. We recognize it as the state of exacerbation. Comparative statistical analysis reveals that this state occurs mostly between 9.5 and 11.5 years of life. 50% of the decompensation cases observed occurs in this age range. The data obtained gave us an incentive to develop a prevention program. The target group included a population aged 9.5-10 with PSU (PPMI-program). The 2-year experience of incorporating the risk subgroup of SLIC into the PPMI-program gave a positive return. The amount of decompensations reduced significantly. Intensity of psychopatological disorders decreased.