A MANDURAH teacher is being investigated by the Education Department after students reportedly posted “extremely graphic” nude photos of her.

It is understood the John Tonkin College teacher gave a memory stick to a student to use, but warned the student not to click on photos contained on the stick.

The student is reported to have viewed the images and then shared them with friends, who in turn posted them on social media.

The graphic images reportedly show the teacher naked with her boyfriend.

The school is reported to have interviewed the students involved in the incident while the Education Department said the issue was being “full investigated” by an internal committee.

A department spokesperson refuted claims the teacher had been sacked.