The main aim of the present study is to analyze the opinion of pupils, families and teachers in four European countries (Spain, Hungary, Austria and the Czech Republic) on the prevalence of violent behavior and other problematic aspects related to coexistence in schools, and on the way in which individuals are personally affected by them. For this purpose, a single instrument was used. From the results obtained it emerges, first of all, that there are significant differences depending on who is analyzing the school problems. Generally, families perceive the problems analyzed as less common and feel less affected by them personally. Hungary was considered to be the country with the lowest levels of school violence. Pupils indicate their concern about the high levels of lack of motivation or boredom, whilst teachers are more preoccupied about the serious problems of coexistence, due in particular to the presence or use of weapons and drugs and to intercultural conflicts.