"It does seem that the spiral is moderating. Not turning around, not ending, but moderating," Baum said.
The average published cost for tuition and fees at a private college for the 2013-14 academic year was $30,094 — up $1,105. An out-of-state student at a public college or university faced an annual average price tag of $22,203, which is up $670. The average price tag for an in-state student to attend a two-year institution was much less at $3,264 — up $110.
Most students don't actually pay that, though. There are grants, tax credits and deductions that help ease the cost of going to college. About two-thirds of full-time students get grants, most from the federal government.
But, in the two years leading up to the 2012-2013 school year, the federal aid per full-time equivalent undergraduate student declined 9 percent, or about $325.
That means students have to foot more of the bill themselves.
"The rapid increases in college prices have slowed, however, student and families are paying more because grant aid is not keeping up," said David Coleman, president of the College Board.
While the average published price for tuition and fees for a private college is $30,094, the net price is $12,460 — up $530 from last year. The net price is what they actually pay after grants. There were years this decade that saw the net price going down, but it has gone up the last two years.
The average published in-state price for tuition and fees at a public four-year school is $8,893, but the average net price is about $3,120.
Molly Corbett Broad, president of the American Council on Education, in a statement called it "troubling" that overall grant aid is not keeping up with prices. Her organization represents the presidents of U.S. colleges and universities.
"Institutions are committed to holding down costs, but it is equally important for state and federal governments to play their part to make college affordable," she said.
The College Board is a not-for-profit membership group that promotes college access and owns the SAT exam.
The report spells out the large declines in state appropriations given to public institutions in recent years. These cuts have been blamed for rises in college costs. Other causes often cited range from the high cost of health care for employees to the demand by students for flashier campus amenities.
Among the other findings in the report:
— Adding in costs for room and board to live on campus, average annual published costs: At public, four-year universities, $18,391 for in-state students and $31,701 for out-of-state students; $40,917 for private colleges and universities; $10,730 for in-state students at public two year schools.
— The average published tuition and fees at for-profit institutions increased by $70 to $15,130 — an increase of less than 1 percent.