Abstract
Paper is focused on verbal during grammar school, particularly frequency, forms and functions. The case studies of four classes on student's vulgarity were conducted.
Vulgar language used by children in everyday situations was analyzed in terms of knowledge, context, evaluation and purposes. Attention is paid to the frequency of vulgar language during classes and breaks, using by different age groups and by girls and boys.
The results show that 1) boys use verbal vulgarity more often than girls, 2) frequency of vulgarity during breaks is higher than during classes, 3) adolescent students use vulgarity more often than young children. Prevalence of vulgarity in the group of adolescent girls increases, mainly during breaks.
It is caused by efficient distinction among different situational norms (better than boys use).