Now that my son is back in school, I have been trying to do what I can to make sure that he is able to focus on homework while also spending plenty of time playing and relaxing. To make sure that he is able to focus, I always have him do homework first before he is able to play games or do anything else. Once he has shown me that he is finished with his homework, he is allowed to play games or watch TV.
When my son does well on a test or gets a good grade on a hard assignment, I try to make sure that he is rewarded for this. Typically, what I will do is give him a special treat for every couple of times he does this. Most recently, I bought him some brand new video games that are ones that are perfect for him to play with. I even let him play his games for extra time since they were new ones.
My son does a lot better when he is motivated by playing games. It is a great way to encourage him to do his homework and to show it to me when he is finished with it. I like being able to find items that will entertain my son and make the best rewards for his good behavior.