As students around the world crammed for Saturday's SAT college entrance exam, many in Asia were poring over old tests in hope the College Board would again reuse a test that has leaked ahead of time. These bootleg tests are widely available on Chinese websites to download for free.

Students and tutors were amazed in January after thousands who flocked to regional testing hubs in Hong Kong and Singapore discovered they were given the same exam administered in Asia the previous June.

In the intervening months, copies of the exam freely circulated on the Web, giving students in Asia a leg up in the fight for prized slots at premier U.S. universities.