"Unruly behavior" refers to actions or conduct that is chaotic, disruptive, or not well-behaved. It implies someone not following rules or demonstrating a lack of self-control. Full definition
In addition to this, I possess strong knowledge of a number of key teaching methodologies and am an expert at managing unruly behaviour in a positive way. (dayjob.com)
Such unruly behaviour from those supposedly dedicated to upholding the rule of law does not augur well for Libya. (blog.politics.ox.ac.uk)
Teachers listed unruly behaviour as chatter in class, the inability to follow rules, backchat, distraction of mobile phones and other electronics along with the failure to complete homework. (politics.co.uk)