 Soviet sources report that 90 percent of teachers were killed under the Khmer Rouge regime.Only 50 of the 725 university instructors, 207 of the 2,300 secondary school teachers, and 2,717 of the 21,311 primary school teachers survived.The meager educational fare was centered on precepts of the Khmer revolution; young people were rigidly indoctrinated, but literacy was neglected.