What makes Colin Gray's case unusual in United States legal history?

This case is described as unusual because there have been very few precedents in the United States where a parent has been charged with crimes committed by their child. According to the speaker, it may be the only known case of this type to be tried in the country. The case represents a significant legal moment that examines parental responsibility in relation to a school shooting. While the speaker emphasizes that Mr. Gray is presumed innocent until proven guilty by a jury of his peers with competent evidence, the case itself stands out for its rare approach to holding parents accountable for their children's actions.