Nathan Kuncel and Paul Sackett:

Myths abound about standardized tests, but the research is clear: They provide an invaluable measure of how students are likely to perform in college and beyond

This Saturday, hundreds of thousands of U.S. high-school students will sit down to take the SAT, anxious about their performance and how it will affect their college prospects. And in a few weeks, their older peers, who took the test last year, will start hearing back from the colleges they applied to. Adm