In case you didn't click through to read the entire Encyclopedia of Alabama article yesterday, here's more:

Each major camp established camp colleges, and prisoners could enroll in a wide variety of courses, including history, mathematics, the sciences, vocational courses, and preparatory classes for students seeking postwar careers in medicine, law, electrical engineering, and architecture. The educational opportunities provided by these camp colleges proved popular. For example, of Camp Opelika's 3,000 prisoners, some 1,400 participated in coursework. Initially, prisoners taught the courses. Later, prisoners were permitted to enroll in correspondence courses from the University of Michigan and the University of Wisconsin.

There are similar stories from camps across the US and Canada.