Primary Eight Schools in Tonj South County of Warrap State started their mock exams on Monday.
Examinations invigilator Santo Gur Akol said they amalgamated Tonj Academic, Kalkwel and Bongo Primary Schools to sit their mock exams in Bongo as centre number one, Don Bosco Radio reported.
He said the other pupils are sitting in Thiet Primary School as the second exams centre.
Mr Akol said they are setting the mock exams to prepare candidates for the final exams at all levels
He encouraged pupils to work hard in the mock exams to test their minds and put more efforts in the final exams.