The Cambodian Independent Teachers Association (CITA) on Monday sent a letter to the Education Ministry accusing officials at a Kandal province school of administering unauthorised exams in a bid to make money. Rong Chhun, the president of CITA, said students at Hun Sen Sa’ang High School had been given the option of paying 3,000 to 4,000 riels to sit for an exam last week, or paying 10,000 to 20,000 riels (US$2.38) for an automatic pass. School director Chiv Kim Hay denied the charge, and said the exam had been introduced to boost attendance.