OCEANSIDE, Calif. -- John Corcoran graduated from college and taught high school for 17 years without being able to read, write or spell.Corcoran's life of secrecy started at a young age. He said his teachers moved him up from grade to grade. Often placed in what he calls the "dumb row," the images of his tribulations in the classroom are still vividly clear. "I can remember when I was 8 years old saying my prayers at night saying please god tomorrow when it's my turn to read please let me read. You just pretend that you are invisible and when...