This may mean that he will never return. When you set goals you can accurately and effectively determine if they were met. Report cards enable the teacher to determine what the student has learned, which facts have been properly understood and retained. Report cards should be sent each quarter so that the parent can be advised of their child's progress. Try to keep your comments to the positive and improved areas of the child's growth.
Children enjoy recognition for good performance or improvement.
Rewards can be nearly anything like book marks with Bible verses on them, Bible pictures, stickers, buttons etc but try to make them have some Biblical significance. With these motivational ideas you are reinforcing good work habits and encouraging good listening skills. These commend the child for a job well-done. If there are any problems with a certain child then privately discuss it with the parents. Most parents will be happy with your efforts and will back you.