Talk to the student after class. Do not get into a shouting match with a child or begin arguing. You lose valuable instructional time and inadvertently reinforce the negative behavior by giving it attention. Remind the student of classroom rules and consequences for their infraction.
Contact parents if misbehavior continues. Call them yourself if possible and set up a conference. State the reason for the conference in non-accusatory tones. If parents cannot come to the school, arrange for a phone conference with them. Ask a school administrator to act as a witness. Tell the parents the specifics concerning their child's infraction and the consequences. State your concerns then allow them to respond without interruption.
Enlist the support of the parents in a discipline plan by asking for their input. Do not just tell parents what their child did wrong and then impose a punishment. Ask if there are any circumstances outside school that could be causing the behavior. Offer to secure the services of the school counselor to talk their child. Parents will usually back you up when they feel that you are honestly concerned about their child's welfare.
Enforce established consequences. If misbehavior continues, refer the student for school discipline procedures like in-school suspension, detention or out of school suspension. Do this as a last resort only if other attempts at remediation fail.
Treat the student respectfully when he is allowed to re-enter your class. Do not bring up past behavior or allude to it when speaking to the class. Show the student that you are willing to move forward from this point. Hopefully, you will establish an atmosphere of mutual respect.