Violent accidents in Prague secondary-school children attending the first to ninth grades were followed-up. In the group including 9 309 children, i. e. 4 488 boys and 4 821 girls, 9.6 suffered a violent accident. Registered were only accidents treated by a physicians, either in hospital or at the out-patient department, during the last calendar year. A signinitificantly higher incidence of violent accidents was found in boys - 11.0 % vs. 8.2 % in girls. The most frequent type of injury due to a conflict are similarly as in adolescents, fractures and dislocations. The most serious ones, as regard long-term consequences, are head injuries, first of all concussions of the brain and fractures of the skull. Such injuries represent 18.9 % of all violent accidents in boy. Permanent consequences were registered in 11.0 % of the boys and in 7.4 % of the girls. Violent accidents occur most often at school, i. e. more than half of them, 51.6 % in boys and 51.9 in girls. The percentage of violent injuries in the Prague group - 9.6 %, exceeds the average of 7.4 % assessed in more than 40 districts in the Czech Republic.

        Key words: accidents - violence - school age