Durban – A school principal has appeared in the Nongoma Magistrate's Court for allegedly sexually assaulting a pupil, KwaZulu-Natal police said on Tuesday.The man appeared in court on Monday. He was released on R1 000 bail and his case was postponed to September 29, Captain Nqobile Gwala said.A teacher at the school, who spoke to News24 on condition of anonymity, said allegations had emerged last year that the principal was having sex with pupils."Two children admitted to having sex with him and the matter was swept under the carpet. When the school governing body asked him about the matter, he told them that it had nothing to do with them."Principal gone to ground The teacher alleged that, last Thursday, a Grade 7 pupil left the principal’s office crying, and told another teacher that the principal had sexually assaulted her."When she reported it, one of the teachers shouted at her and said the matter would bring the school into disrepute."The source claimed the principal had since gone to ground."He has let the school down so many times," the teacher said.The KwaZulu-Natal education department said it was not aware of the allegations."If the incident is true, that principal knows what is coming for him," spokesperson Muzi Mahlambi said.An investigation would be instituted and if the principal was found guilty, he would be fired, Mahlambi said.Teachers who filmed himself having sex with pupils in courtIn a separate matter, four more teachers at the Ekucabangeni High School in Nquthu, where a teacher allegedly filmed himself having sex with pupils, have been suspended for allegedly also having sex with pupils.The teacher who allegedly took the video appeared in the Nquthu Magistrate's Court on Monday. His case was postponed to September 7.He was charged with two counts of sexual grooming, two of rape, and one of sexual assault, provincial National Prosecuting Authority spokesperson Natasha Kara told News24 on Monday.KwaZulu-Natal Education MEC Mthandeni Dlungwane, who attended the court appearance, said three teachers from other KwaZulu-Natal schools had been dismissed for having sexual relationships with pupils. He said he wanted their names added to the sexual offender's database.