The idea that children who have been victims of violence and have been exposed to it in their homes will be violent, has become a common belief of many education professionals, and this statement revictimizes these children and increases their suffering trajectories.
It is not true that scientific evidence has found a consistent link with the perpetuation of violence.
Some scientific evidence in this regard:
Widom, C. S. (1989). The cycle of violence. Science, 244(4901), 160-166. https://science.sciencemag.org/content/244/4901/160/tab-pdf
This is about the link between child victimization and subsequent antisocial and violent behavior that is far from certain, and the intergenerational transmission of violence is not inevitable
Margolin, G., & Gordis, E. B. (2000). The effects of family and community violence on children. Annual review of psychology, 51(1), 445-479. https://www.annualreviews.org/doi/abs/10.1146/annurev.psych.51.1.445?journalCode=psych#_i6
Holt, S., Buckley, H., & Whelan, S. (2008). The impact of exposure to domestic violence on children and young people: A review of the literature. Child abuse & neglect, 32(8), 797-810. https://www.sciencedirect.com/science/article/abs/pii/S0145213408001348
Even the studies that did find some correlation in the 1990s do not provide any causal relationship, what they say is that it could be considered a logical theoretical link between the experience of physical abuse in early life and the later development of aggressive behaviour; they do not claim that it exists, but that this is the approach of some theorists.