Cities talk a lot about harnessing big data, but their efforts vary widely. Some, like New York City, Columbus, and Kansas City, Missouri, have emerged as leaders in using data to tackle issues surrounding transportation, inequality, and health, while others like Anchorage, Alaska, are just starting to mine theirs. All would benefit from more guidance; the more experienced cities need to know they’re on the right track and the newcomers could use a roadmap of best practices.

That’s why Bloomberg Philanthropies is introducing a new certification initiative that aims to set the national standard for how local governments enact evidence-based policies. Think of it as a Good Housekeeping Seal, or LEED certification, but for data-smart cities.

The certification was announced this week at Bloomberg’s second annual What Works Cities summit in NYC, part of the organization’s efforts to expand their current initiative offering technical assistances to dozens of cities over the past two years. The aim of What Works Cities is to help 100 cities by next year; the program has accepted 77 participants so far, with 10 cities joining this year—including Washington, D.C., Orlando, Indianapolis, and lesser-known cities like Corona, California, and Tyler, Texas.

“We were getting interest from cities around the world, and from smaller cities,” Simone Brody, executive director of What Works Cities. “We realized very quickly the demand was really great for this.”

The certification program offers a way for virtually all cities to get involved. The point-based program will award qualified cities a silver, gold, or platinum status based on a list of 50 criteria from Bloomberg’s set of standards. These criteria measure, for example, how transparent the government is, how effectively it uses the data to spot challenges and opportunities, and how well they’re meeting community needs.

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In a briefing, Stephen Goldsmith, the director of innovations in American government at Harvard, lays out examples of successful initiatives. Kansas City, Missouri, for example, is notable for embarking on a grand inventory effort that helped different departments better understand the city’s data. Seattle recently passed an open-data policy that enabled the city to codify resident’s priorities and to provide a “community back path” for the city to move forward. Jackson, Mississippi used “granular data-driven analysis” to allocate limited resources amid a budget cut.