The College Board has canceled college entrance exams on Saturday in China and Macau because of cheating concerns.

The New York-based testing firm revealed the cancelations on Thursday. College Board officials canceled the Asian tests after learning some students may have accessed the SATs to be administered this weekend.

The affected students have been notified and should be advised next week about a makeup exam, which will probably be scheduled in a month or so.

College Board officials won't say how the students accessed the tests in advance, citing security concerns.

Last year, federal prosecutors in Pittsburgh charged 15 Chinese citizens in a conspiracy to have impostors take the SAT and other college entrance tests for Chinese students.