States could save money and increase college-graduation rates by providing modest financial incentives for students to choose private colleges over comparable public ones, according to a report released this week. The conclusion, which was quickly disputed by a group representing public colleges, comes at a time when a growing number of states are providing the opposite incentives. This week New York became the first state to offer free tuition at both two- and four-year public colleges for middle-class families. Other states are considering similar moves, prompting widespread concern that enrollments could plunge at some tuition-dependent private colleges that recruit heavily from their states. The report was prepared for the Council of Independent Colleges as part of its efforts to promote the value of the liberal arts and independent colleges. The report was distributed this week to all of the council’s members, to provide talking points when they make the case for financial support from state lawmakers, especially in states where free public-college tuition is on the agenda. It’s hardly surprising that the council, which represents more than 700 nonprofit independent colleges, would promote a report based on the argument that costs per degree are lower and graduation rates higher at private institutions. But the report’s authors, both of whom work at public universities, say it is based on a comprehensive analysis of federal data and state-specific simulations in 24 states. In all but two of those states, the proposed shift would save money, the researchers concluded. The findings were dismissed by Barmak Nassirian, director of federal relations and policy analysis for the American Association of State Colleges and Universities. "I empathize with their plight, and I don’t begrudge them their moment in the sun, if that’s what their report is, but there are lots of problems with it," he said in an interview on Thursday. "They’re trying to make the counterintuitive case that expensive schools are cheaper t