Case
Disruptive Student

Jason was one of the most provocative and disruptive students in Mrs. Murphy's class. He continuously talked to girls and teased students near him. He was typically very sarcastic and responded rudely to mostly anything Mrs. Murphy said. She tried setting limits with Jason and even sending him to the detention room, but he did not show up. She sent him to the school counselor but "charmed" his way out of the remedial actions. What actions should Mrs. Murphy take next if Jason keeps his behavior?

Solution #1
The teacher needs to call in Jason's parents for a parent conference. This will at least establish an understanding with the parents that a behavior problem is present. Mrs. Murphy should also contact the behavior specialist (if there is one) to figure out what steps she should take next. If all else fails, administration should be notified of the problem to create a plan for success.
Solution #2
Sounds like its time to meet with the parents to receive support from them. This step alone could push the student to stop misbehaving since they don't want their parents involved. If this does not work, I would seek help from administration with a referral. This allows the teacher to have an administrator remove him from the class so there is less teaching time wasted.
Solution #3
Though it is not highly recommended to let your administration know that you can't handle someone in your class, if you have already sent a kid to the school counselor and this child is teasing other students and being a disruption you may need to go and speak with your administration. Sometimes the authority of an administrator coming in and letting the student know that they are there for them can be a "scare tactic" that might make a big difference. If he thinks you are going to report him to a higher authority that he doesn't want to deal with, he may improve his behavior.
Solution #4
Like others have said, contacting the parents is important here. You might even find that he is exhibiting some of the same behaviors at home with his family. Together, a plan could be developed that tackles the problem both at home and at school.
Solution #5
I think putting the student by himself may help the disruption. Keeping him isolated in the room for a long period of time may not be helpful, but situating him in a position that he isn't going to disrupt students may help the class flow better without his disruptions. Making sure to explain to him what is happening may also help, but this doesn't help all students. I recommend giving it a few days to start and see how he does. Document his behaviors when he isn't seated with other students and if need be, do not let him work with groups of students during class to stop the disruption. I don't think doing this either for a long period of time will be beneficial to him, but it sounds like he hasn't been working with the plan so far.
Solution #6
In this situation, Jason should receive a referral and visit with the school behavior specialist. They will be able to aid Jason properly.
Solution #7
First off, I am not sure what form of authority they have in place but charming himself out of the remedial actions does not sound appropriate. He needs to be held accountable for his work, and also moved away from distractions in the classroom. There is nothing good coming from the detention room, it is just enabling his bad behavior.
Solution #8
I would move the child's desk away from the other students, he'll be able to bring it back to the group for group work but he'll need to earn staying in the group back. I would immediately involve the parents to come up with solutions that can be implemented in the classroom and at home.