I don't think this kid has a real special ed issue; but it could be ADHD, coupled with very bad parenting. Any parenting ed. classes around for them? This is where your school counselor/psych. could help.
As said before, just starting the pre-referral process might be enough to get these parents off their a$$es to do something.
How about coming up with some logical consequences for this kid, as a team, including the parents. Some parents really have no clue!
And yes, I can relate to the "mean girls" described above. They are rampant during the middle school years (especially 5th-7th grade). My school is a Developmental Design/Responsive Classroom school and we have an anti-bullying program. Both of these things have gone a long way to help the kids find different ways to act. But, being mean seems to be part of the "testing" that happens at this age.
I was a pretty mean girl when I was that age...