It really depends on how you look at it. I had a pretty bad temper as a kid, so I could yell and slam the door when I got angry, but at home that was really the extent of it. I'd fight with my oldest sister who had a similar bad temper, but my parents, especially my mom was really good at reasoning with me, calming me down and getting me out of my mood (which was annoying when all I wanted was to stay angry for a while longer, lol). I don't really see just having a temper as the same as being a bad kid, kids are generally more overwhelmed by their emotions than adults, so it's harder to keep it in check.
The more debatable part comes from my teen years. I was severely bullied from early on in school, and it sort of just built up over time, until I just finally properly exploded. I started acting out, walking out of class, cutting school whenever it got to be too much, I would yell at my teacher, my principal even - completely in public. As time went by I started getting in fights, I would lash out physically at anyone who attacked me, whether the attack was physically or verbally. I had serious anger issues, and even when I got away from that school and into environments that didn't include anyone from my past, I had a hard time letting go of that anger.
So, I don't originally see myself as a bad kid, but I kind of turned into one for a while. Sure, my behaviour had a clear source, and explanation, but doesn't most of the bad behaviour out there have that?