Dalton State College has been flagged by the Georgia university system as having the largest share of undocumented students in the state.
But school officials say they have no way of knowing how many of those are illegal residents.
"Undocumented does not mean illegal," said Dalton State President John Schwen.
Some could be self-identified illegal residents while some could be U.S. residents without the proper documents.
Students classified as undocumented could not prove Georgia residency status and will be charged out-of state tuition.
A count of undocumented students was released Wednesday by the University System of Georgia, the result of a statewide probe into the residency status of Georgia college students.
"(The system) was trying to make sure that there were no undocumented students who were receiving in-state tuition," Schwen said.
Records show 66 students at Dalton State set to take classes this fall are undocumented. Across the system's 35 colleges, there were a total of 230 undocumented students.
The review was triggered last spring after it was discovered that a Kennesaw State University student living in the United States illegally was receiving in-state tuition because she said she was a Georgia resident. The student was brought from Mexico to live in the United States when she was 10.
Her arrest sparked furious debate among law enforcement, immigration activists and education and political leaders about whether illegal immigrants should be allowed to attend state-supported colleges.
Georgia is one of three states that doesn't allow college to extend in-state benefits to illegal immigrants. Arizona and Colorado are the other two states.
Georgia colleges don't require proof of citizenship and don't check students' U.S. residency status when considering whether they should pay out-of-state tuition, which is three times higher than in-state costs.
The review's goal was financial, "not to find out if students were illegal," said John Vanchella, a spokesman for the system.
Still, the review does not address how many illegal residents, like the Kennesaw State student, are receiving an in-state tuition discount. Students can prove Georgia citizenship and not be U.S. citizens.
A Board of Regents committee is reviewing changes to the system policy for checking citizenship and plans to release its recommendations in October.
If the board begins to require schools to verify citizenship, Schwen said, he is confident the schools won't find any Dalton State students who have lied on their applications.
"We may find citizens that are really not residents of Georgia," he said.