How are the standards more rigorous?
The Fordham Institute found that the Common Core State Standards are comparable or superior to standards in 48 states, including Utah. The standards are internationally benchmarked and steeped in the "best practices" of the states. Common Core math standards take an integrated approach, introducing in-depth instruction in mathematics concepts early and reinforcing them through the later grades. In ELA, literature, including the classics, is still required, but there is also emphasis on informational texts, as is done in the best performing nations of the world, like Finland.