WASHINGTON - Arizona slipped from 46th to 47th place among states in 2011 for the well-being of its children on a variety of measures, including poverty, education, health, and family and community factors, according to a new report.

KidsCount 2013, released Monday by the Annie E. Casey Foundation, ranked Arizona ahead of only Nevada, Mississippi and New Mexico for 2011.

"It's disappointing that we are so far at the bottom," said Dana Naimark, president of the Children's Action Alliance in Arizona. But she expressed confidence that the state can "greatly improve" by focusing on specific areas, including preschool participation.

The report said that children's academic achievement and health improved in most states between 2010 and 2011, but that their economic well-being continued to decline in the wake of the recession.

"There were some improvements, but families are still struggling" nationwide, said Laura Speer, Casey's associate director for policy reform and data. She said the most disturbing indicator was "the fact that the child poverty rate continued to go up." The report called growing up in poverty "one of the greatest threats to healthy child development," because it can contribute to behavioral, social and emotional problems and poor health.

Nationally, 23 percent of U.S. children in 2011 lived in poverty - defined as income below $22,811 for a family of four - up from 22 percent in 2010.

In Arizona, the number of children in poverty was 27 percent in 2011, moving the state from 37th place to 42nd place overall. The state's relatively high rate of poverty and the number of children who are not in preschool were two main factors weighing against the state, Speer said.

"Even though our economy is slowly recovering, kids are left behind in some ways," Naimark agreed.

While 54 percent of the nation's 3- and 4-year-olds did not attend preschool, the rate in Arizona was 67 percent in 2011, second-worst in the nation, the report said.

"In Arizona, we've cut out our state funding for full-day kindergarten and preschool, which impacted the number of children who can access preschool," Naimark said.

The result also worries Rhian Allvin, CEO of First Things First, an organization created by voters in 2006 to serve children under age 5 in Arizona. Children who have access to high-quality early learning score higher on school readiness assessments and are more likely to graduate and go on to college, she said.

Allvin said the organization invested $74 million in fiscal 2013 to improve the quality of and access to early learning. And she noted that the just-passed state budget includes $9 million in child-care subsidies.