Seventy percent of the country’s college graduates see their investment pay off within 10 years, but that outcome correlates strongly to the state where a student obtains their degree, according to the Strada Foundation’s latest State Opportunity Index.

The report, released Thursday, shows that states such as California and Delaware surpass the average at 76 percent and 75 percent, respectively, while North Dakota, for example, falls significantly short at 53 percent.

Across the board, the nation still has a ways to go before it can ensure all graduates see a positive return on investment, according to the report.

“Too many learners invest substantial time and money without achieving strong career and earnings outcomes,” it says. “Meanwhile, many employers struggle to find the skilled talent they need to fill high-wage jobs.”

Strada hopes that the index and the five categories it highlights—outcomes, coaching, affordability, work-based learning and employer alignment—will provide a framework for policymakers to “strengthen the link between education and opportunity.”

“The State Opportunity Index reinforces our belief at Strada Education Foundation that we as a nation can’t just focus on college access and completion and assume that a college degree will consistently deliver for all on the promise of postsecondary education as a pathway to opportunity,” Strada president Stephen Moret said in a news release. “We must look at success beyond completion, with a sharper focus on helping people land jobs that pay well and offer growth opportunities.”