It’s one thing when you catch a worker watching porn. It’s entirely something else when others are exposed to the pornographic materials.

A Phoenix high school photography teacher is under investigation by police for allegedly projecting pornography on a screen in a classroom occupied by 13 students.

A student told a local TV station in Phoenix that the teacher had connected his personal computer to a projector screen for a photography lesson.

According to the student, the teacher was watching porn at his desk but must have forgotten he had the computer tied in to the screen.

Students say they saw six pornographic scenes.

Some of the teens also wondered if the teacher could have been watching porn at other times during the school year. “I was just creeped out that a teacher that I had known from the beginning of the year could have been watching this the whole time we were in class,” one student told ABC-15 in Phoenix.

Arcadia High School sent a letter home to parents that stated the teacher was placed immediately on administrative leave and that the district was investigating.

Police will determine, based on the district’s report, whether any charges should be filed against the teacher.