The 16-year-old pregnant star was photographed in Hammond, La. on Friday carrying a GED book, used to study for a high school equivalency degree.
Spears, who announced last month that she's expecting a baby, was pictured outside a building that houses both the Tangipahoa Parish School System Adult Education Center, which is a GED preparation site, and the Title I Parent Center, which teaches parents how to help their children learn reading skills.
The star of Nickelodeon's Zoey 101 previously attended the prestigious Parklane Academy in McComb, Miss., which she had been going to off-and-on for years, depending on her filming schedule. (She studied with tutors while in Los Angeles.)
Just before Thanksgiving of 2007, Spears enrolled at the school full time, saying that she had completed her filming, according to a school staffer. But after Thanksgiving, Spears said she was needed back in Los Angeles. The source says that if Spears had tried to stay, she likely would have been expelled for being pregnant. The school had no official comment.
Spears has been keeping a low-profile since she announced she is expecting a child – and hasn't been photographed since her big sister, Britney Spears, suffered a meltdown last week.
However, two weeks before Jamie Lynn revealed her pregnancy, she was seen buying several pregnancy-related items, a source tells PEOPLE.
Jamie Lynn Buys Pregnancy Book and CalendarSpears picked up a pregnancy calendar, the well-known book What to Expect When You're Expecting and a sonogram frame, according to a clerk at the Brookhaven, Miss., baby boutique Expectations.
"It was just random things – she was in here with one of her girlfriends," says the clerk, who asked not to be named. "It was about two weeks before it hit the news that she was having a baby. She hasn't been back. She's probably laying low."
Reporting by SIMONE WEICHSELBAUM, ALYSSA SHELASKY, WENDY GROSSMAN and ALICIA DENNIS