Answer:
1. I'm not sure what 'level' system you are talking about, but this sounds severe. The student is an instigator, a bully, and is intentionally harming others.
2. At this point, it seems like the student has already been disciplined independently by the teacher. The next course of action, especially since the student is harming others, would be to arrange a meeting between the teacher, the principal, and the student's parents or guardians. An ultimatum must be reached that keeps the student from continuing the bad behavior, or even worse, escalating. The student could be facing expulsion in the future, so a very strict and unwavering hand needs to be used in setting ground rules and goals for improving the student's behavior.
Step-by-step explanation:
Usually situations like these stop at detention or a quick trip to the principals. But this student has gotten to the point where they are harming others. This is not acceptable and the student could possibly be expelled. For the student to stay at school, the violent behavior needs to be addressed and completely stopped. There also can not be and concessions made. The authorities in this situation (parents/guardians, principal, and teacher) need to be firm and not give any ground. The student has proved they are smart (instigating fights and other disturbances without being implicated) so the rules need to be concrete and clear.