Consider this...

One of the greatest motivators is parental approval.  If misbehavior is an issue, consider speaking with the parent about loss of privileges in school and at home.  It can increase the chance that the student will improve his/her behavior.

Parent Support

Take time to call parents about students' appropriate behavior or academic achievement.

Working with Parents

Design programs or events that require strong parental support.  These types of programs help students perform at a higher level.  One example is "Family Math Night".