I'm reading Cooney Ricketts by Jack L Dickinson. In it Mooney goes to VMI at 15 years old in 1863. At the age of 13 he joined the Border Rangers, Later to become the 8th Va. Cav.. He hadn't been to school since he joined the Rangers. Here is his curriculum in VMI.
http://img.photobucket.com/albums/v237/8thvacav/VMI0003.jpg
http://img.photobucket.com/albums/v237/8thvacav/VMI0004.jpg
http://img.photobucket.com/albums/v237/8thvacav/VMI0003.jpg
http://img.photobucket.com/albums/v237/8thvacav/VMI0004.jpg