Mark Wahlberg is working toward earning a high school degree online, after dropping out during his freshman year.
"I quit kind of during the ninth grade," Wahlberg told David Letterman on "The Late Show with David Letterman" on Monday. "They're going to give me whatever credits I already have, which is probably like one or two."
The 41-year-old actor never obtained his high school degree because, growing up in the Dorchester section of Boston, he got in trouble with the law - stealing cars, selling marijuana and getting into fights. He also spent time in jail when he was 17-years-old, after assaulting a middle-aged Vietnamese man, leaving him blind in one eye.
Wahlberg told Letterman that he plans to make use of a new Massachusetts program, which offers online high school courses.
"It's an actual diploma," he told Letterman. "I've got to take up all the courses that I missed... I'm a little nervous. It's one of those things where I said, 'You know what? I'm going to make it happen.'"
Wahlberg is known for his acting projects, such as "The Fighter" and "The Departed." He is also the brother of New Kids On The Block singer Donnie Wahlberg. The two brothers opened up a hamburger restaurant in Hingham Shipyard, MA, called Wahlburgers in October.
He recently appeared opposite Kate Beckinsale in "Contraband" where he plays a former smuggler who works as a night guard.
Wahlberg will next appear opposite Mila Kunis in "Ted," which follows a man and his teddy bear, who came to life as a result of a childhood wish but turned into a filthy-mouthed scoundrel, voiced by "Family Guy" creator Seth MacFarlane.
"Ted" is slated to hit theaters on June 29, 2012. Watch a clip from Mark Wahlberg's appearance on "The Late Show" and the trailer for "Ted" below.