MANILA (UPDATE) — The Department of Education said Wednesday it was investigating a report that a high school teacher in Iloilo province allegedly showed a pornographic video during science class.

The male teacher at the Pili National High School in Ajuy town allegedly showed his Grade 10 students a video with the title "Girl’s Guide to 21st Century Sex," The Manila Bulletin reported.

The teacher resigned shortly after the incident, reportedly saying he wanted "peace and quiet" after his alleged involvement.

DepEd-Iloilo division superintendent Roel Bermejo "assigned a team to look into the said controversy" and directed the school principal to submit an incident report, the agency said in a statement.

"The public is assured that this matter will be dealt with in a just and objective manner strictly adhering to statutory policies in the department," said DepEd.

The classroom "should not only be a conducive place but also a healthy and wholesome environment for learning," it added.

The agency also said it was "serious" in implementing policies to ensure that "every learner is protected from child abuse and his right and dignity are upheld."

- with a report from Cherry Palma, ABS-CBN News