Take the student aside and clearly communicate classroom rules and consequences. Give him specific examples of the consequences of behaviors such as aggression or classroom disruption. Follow through on the consequences consistently.
Ask the student about her goals and dreams. Correlate good behavior in class to achieving those goals. Help the student write down her daily goals at the beginning of the day. Review the goals at the end of the day and praise the student for accomplishing them. If the student had issues during the day, talk to her about how she could have approached the situation differently.
Use rewards and incentives more than severe consequences to teach the child how to cope with his problems. Praise the student as soon as he shows a positive change in behavior.
Ask other students to include the child with emotional disorders in group activities. Identify students who can act as "buddies" with the special needs child. Pair the child up for classroom activities, and encourage buddies to spend time together outside of the classroom.
Be patient and monitor the student on a weekly basis. Build a relationship with her when possible. Applaud small improvements, and change your strategy if you do not see a change in your student over a period of about two weeks. Keep adapting your coping strategy based on the student's needs.
Talk to the child's parents about your teaching techniques. Ask them to enforce your rules at home when possible so he can have consistent rewards and consequences throughout the day.
Ask parents if the child is taking any medications and whether the medication has any side effects. Be cognizant of behaviors that occur due to medications and refrain from punishing her for these behaviors. Instead, talk to the student about these side effects and coping methods.