The trial of an Illawarra school teacher accused of child sex offences has been adjourned until June.
Defence barrister Susan Oliver requested the adjournment to allow the defence to obtain and examine the biological matter found on swabs taken from one of the alleged victim's bodies.
On Monday, Wollongong District Court heard swabs taken from the nipples of one of the alleged victims had saliva with DNA that matched that of the accused.
The man, an assistant school principal at the time of the alleged offences, has pleaded not guilty to six charges of indecent assault.
The trial was rescheduled for June 23.