Acts of indiscipline, incivility and violence are common in the school environment and reflect on physical and mental health of those involved.

To characterize conflict records made by students, teachers/others and parents/guardians in a Brazilian high school institution.

Qualitative research, exploratory documental. Studied 113 records from 2014 to 2016.

“Indiscipline and Incivility”–75 records (66 by teachers/others and 9 by students) of students: improper use of clothes and accessories, cell phone use in class, not bringing material, dating in school, conversations during class, do not respect the timetables, inappropriate jokes, disrupting activities, theft of materials and disrespect toward authority figures. “School violence”–22 records (12 by students, 9 by teachers/others and 1 by parent/guardian) of school violence: physical violence between students, psychological/verbal between students/teachers/others, and a match of sexual abuse. Three records (by teachers/others) of violence against the school: students destroyed teaching and cleaning materials and caused damage to the patrimony. Fifteen records (12 by students, 2 by parents/guardians and 1 by teacher) of school's violence: teachers’ harassment (excessive rigor in regard to school performance, clutter in the ratings, refusal to clarify doubts and inappropriate criticism on student's behavior) and institutional negligence (teachers’ delay, lack of clarification on teaching organization and supervision in practical activities).

Some students’ acts of indiscipline and incivility can be protests against the social control of the school. Assistance in case of conflicts and violence as well as preventive measures must be based on interdisciplinary and inter-sectorial articulation practice.

The authors have not supplied their declaration of competing interest.