South Carolina’s poor, rural schools are getting attention from the Presidential hopefuls again.

Democratic U.S. Sen. Hillary Rodham Clinton of New York makes her ad debut in South Carolina today, with a heavy focus on education. She continues her campaign mantra that middle- and lower-income families will not be “invisible” if she is elected president.

Clinton hits on South Carolina’s so-called “Corridor of Shame” --a stretch of low-performing, rural schools along Interstate 95. The struggle of these schools was chronicled in a 58-minute documentary, called “Corridor of Shame: The Neglect of South Carolina’s Rural Schools,” made in 2005.

Clinton seems to blame President Bush for failing to help. In her radio ad, she says: “If you are a child in a crumbling school along the corridor of shame, you are invisible to this president.”