Oral would suck for the transition students. It's a completely different style and skill set of answering questions and no kid would have training or the mental framework on how to do it. It's great if you're the kind of person who can write a mostly perfect draft essay from start to finish no skipping around or back tracking, but if that's not you, it's gonna be a rough learning curve. This is before we ask questions like how does a deaf person take this exam? A mute person? Someone with verbal paraphasia?