Grandparents are part of the child-care plans of more than one in five households with kids whose mothers are employed outside the home.

New Strategist Press editorial director Cheryl Russell looks at a new Census Bureau research analysis, "Who's Minding the Kids? Child Care Arrangements: Spring 2011," for insight into how costs of raising kids impacts household resources and spending.

Russell notes that costs for families with preschoolers run even at about $179 per week, which explains why grandparents figure into so many households' child-care strategies. It's about coping. Russell writes:

Fully 21 percent of families with preschoolers and a working mother relied on a grandparent as the primary child care provider in 2011, up from 16 percent in 1985.

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