My DS6 is reading at a 4th grade level but really fought the idea of reading outloud to me. I had wanted him to read outloud to me just for the 20 minutes a day that was the goal for the summer reading program, since I know that his reading level in the early grades is based on his ability to read outloud to the teacher. But, I decided to change my tactics rather than make reading a chore for him. Instead, I instituted the program at home that they use at school: DEAR (Drop Everything And Read)time. So, essentially, I announce to everyone in the house that it is DEAR time and we all find a place to sit down and read to ourselves for a certain period of time (in our case, 20 minutes). Anyone who wants to read longer can, and they all often choose to read longer since they really start to get into their books. But, since everyone is doing the same thing at the same time, there is no resistance to reading. And, since I can't tell how well my DS6 is reading since I'm not listening to him, I ask him (excitedly) to tell me all about what he's read. Sure, he may be making some mistakes in his reading, but as long as he's able to tell me all about the story, then I have faith that he's reading well enough. Too, since reading is a fun experience, it obviously encourages reading at lots of other times during the day.
Also, DS6, last summer, never wanted to read aloud to anyone except me and so I was worried that he wouldn't show his teacher what a great reader he was. Well, turns out, I had no reason to worry. When the teacher asked him to read, he read. I think since that was her job and she was an authority figure, it never occurred to him to say no to her. Obviously, your DS's personality would make a difference here, but I just wanted to say that it's a possibility that your DS will read to the teacher and show his true abilities even if he is reluctant to read outloud to anyone else.
