"I think if we can work with the governor to continue to grow the program, I think it's an awesome opportunity," he said.

Gov. Brian Kemp’s office could not be reached for comment.

According to its website, Atlanta Youth Academy, which is in southeast Atlanta, “exists to advance the kingdom of God by offering an excellent Christ-centered education to low-income, urban communities.”

The school serves children through eighth grade, and all go on to graduate from high school, said Peter Rooney, the school’s president. Nearly all also go on to college, he said. About 62 percent receive tuition subsidies from tax credits to attend the school.

The state has put $549.5 million into the tuition subsidies program since 2008, and will add another $100 million if the new, higher cap is reached this year, said Stephen Owens, an education analyst with the Georgia Budget & Policy Institute, a public education advocacy group. During the same period, Owens said, so-called “austerity” cuts reduced public school allocations by around $8 billion. He said the public reporting requirements and lack of accountability — private schools aren’t subject to the same standardized state tests as public schools — mean the public has “no idea on return on investment.”

The money comes from taxpayers who get a full credit from the state for their "contributions" to organizations that distribute scholarships. The largest is Georgia GOAL, whose president, Lisa Kelly, was on hand for Duncan's school visit.

Kelly is thrilled that lawmakers nearly doubled the program cap last year to $100 million and that Duncan is so publicly supportive. "We would not be unhappy with a further expansion," she said.

In an exclusive interview with The Atlanta Journal-Constitution after the event, Duncan briefly outlined other elements of his education plan. He supports Kemp’s plan to give schools about $70 million for security. He wants to study and find ways to increase parental engagement with their schools, perhaps using video conference technology, and hopes for legislation this year. And he wants a testing system with more immediate results than Georgia’s standardized tests, whose scores come out after the school year ends.

OUR REPORTING

The Atlanta Journal-Constitution has the largest team covering Georgia’s Legislature and offers expertise on issues that matter to taxpayers. Get complete daily coverage during the legislative session at www.ajc.com/politics. Follow us on Twitter via @AJCGaPolitics and on Facebook at AJC Georgia Politics.