Police were called to a school in Reading, Tilehurst following reports of a suspicious incident.
Officers attended Little Heath School after concerns were raised on the school site on Thursday, June 18.
The school informed parents about the incident and said it was working with Thames Valley Police while enquiries were carried out.
A spokesperson for Thames Valley Police confirmed officers attended the school and conducted an investigation. The force said enquiries were ongoing but reassured parents there was no wider threat to pupils or staff.
The school remained open and normal activities continued while officers carried out their enquiries.
Anyone with information has been urged to contact police.
