 As the seasons progressed, Theo gradually evolved from being an under-achiever to a successful high school—and college—student (in interviews, Cosby noted a similar change in his real-life son, Ennis).While Theo was a student at NYU, it was revealed that he suffered from dyslexia, a learning disability that inspired him to work harder, and as a result overcame it.By the final season, Theo was a student teacher, helping other children with dyslexia at a local education center.