Abstract
The issue of the book is the failure of Roma or other socially excluded children in the educational system. The diagnosis of the mild mental retardation is o the great deal of these children is assigned in a high percent of these children and consequently, they move into the practical schools, that is outside the main educational stream.
The research aimed on the diagnostic procedures in these children, namely on the detailed analysis of the test SON-R. In Czech republic, the test is taken to be a culture-free one.
That is why it is used in hardly testable children including children socially excluded. The objective of the one year qualitative research was to find out how the children from socially exluded environment understand the test and how they, in their living context, understand the presumptions necessary for the solutions of particular tasks.
The analysis comes to th conclusion that the reason why the socially excluded children often fail in the test is not the lack of cognitive capacity, but the different nature of the family education and the lower educational tradition in the family.