An Arcadia High School photography teacher who was placed on paid administrative leave after inadvertently allowing students to view pornography on a classroom screen has resigned, according to the Scottsdale Unified School District.
Forrest Martin, a photography teacher at the school for about the last five years, submitted his resignation letter on Wednesday.
The incident is under investigation by district officials and Phoenix police, according to Jeff Thomas, district director of human resources.
The incident happened on Monday, and reportedly 13 students viewed the inappropriate material, according to a letter released by the school informing parents about the incident.
Martin told police he was unaware that his computer setup would display the material to students on an overhead projector screen, said Phoenix police Sgt. Tommy Thompson.
The students viewed the images, which appeared to be adult pornography, for "several minutes," Thompson said.
Efforts are under way to replace the teacher so the class can continue, the school's letter stated.
Arcadia, located at 4703 E. Indian School Road, is in east Phoenix but is in the Scottsdale Unified School District.