The Department of Special Investigation (DSI) is expected to ask the Education Ministry to nullify recruitment exam results for 2,000 assistant teachers nationwide after finding evidence of cheating.
DSI director-general Tarit Pengdith said the department is investigating the case following a request by Deputy Education Minister Sermsak Pongpanit.
Initial findings justify recommending the examination results be scrapped, he said.
Thanin Prempree, the DSI’s anti-graft director, said investigators discovered negligence in the way exam papers were kept and delivered. Answers had been revealed before the exam took place, while other answers had been sent to candidates electronically.
People were also sitting the exam on behalf of others, Mr Thanin said.
He said DSI officials would investigate the matter further.