"I like L.A., I like California, but there's a different energy there," he said.
In addition four singing tours and selling nearly 4 million albums in two years, Aiken was named a UNICEF ambassador.
"It's the closest thing I can do now to being in a classroom and teaching," said Aiken, who earned a degree in special education at University of North Carolina-Charlotte. He told "Good Morning America" he recently visited Uganda, where he visited "night commuters" -- children who must leave their homes in the countryside every night to sleep in UNICEF shelters to avoid being abducted by a rebel group.
Last March, Aiken visited camps for tsunami survivors in Indonesia.