Parents: Gaokao tests were switched

Disciplinary authorities in Central China's Henan province are looking into possible fraud in grading students' answer sheets in the national college entrance examination, or gaokao.

Authorities are investigating an alleged switch of four students' answer sheets and will publish their findings as soon as possible, the province's education department said in a statement on Monday.

The statement came after the parents of four students in four cities told disciplinary authorities that they suspected misconduct by the local higher education admissions office in switching their children's gaokao answer sheets.