One way to encourage students to read out loud is to send student teams of two, three or four into a corner of the room with a video camera and a reading assignment. At the end of the day, I play three or four minutes of the tape in front of the class. No one knows which minutes will be played. After cycling through the whole class a few times, even some of my less able out loud readers will now volunteer to be taped reading. Choral reading in front of the camera is also something that works for less able readers.