The Cambodian Independent Teachers Association (CITA) requested Friday that the Ministry of Education, Youth and Sport investigate a supposed leak of the maths section of the high school national exam prior to the test date. CITA President Rong Chhun said that exam scores for the section in question were unreasonably high, and that these results should be considered "invalid and unacceptable". Chroeng Lim Sry, at the Education Ministry, told the Post last week that his office was making progress in ferreting out corruption, and that officials have stopped taking bribes from students during exams. The ministry announced last week that roughly 78 percent of students who sat for the exam had passed.