Southern U. Investigates How a Fired Professor Kept Working for a Year

At least one thing about Dong-Sheng Guo is indisputable: He taught physics at Southern University at Baton Rouge during the past academic year, just as he has done for two decades.

What is in dispute is whether Mr. Guo should have been in front of the classroom those two semesters at all.

University officials say that Mr. Guo was fired in May 2012, during a period of financial exigency that the institution said allowed it to cut tenured faculty members and programs in