LUTHER, Okla. -- An Oklahoma father has expressed concern over allegations that classes at his son's school have turned into Movie Appreciation 101.

When Justin -- who asked that his last name not be used -- started asking his son for a list of lessons learned at Luther High School, his ninth-grader rattled off a list of new releases, reported Oklahoma City TV station KOCO.

"'The Simpsons Movie' was on there, which I whole-heartedly disapprove of," Justin said.

Justin's son told him he had watched about 46 hours of movies in various classes since October. Several of the movies were rated R, he said.

Movies that students at Luther allegedly watched included "Saving Private Ryan," "Dodgeball," "Napoleon Dynamite" and "Spider-Man 3."

"We went probably a month and never saw one stick of homework," the Luther student said.

When a homework checklist the Luther father sends to school with his son came back with a peculiar comment from a teacher, Justin decided to take action.

The teacher's comment on the homework checklist reads: "Seriously! Are we going to continue doing this the rest of the year?"

"I want my son to be able to do algebra. I want him to know about Oklahoma history. I want him to know about literature. These are things that he needs to be prepared for, for life," Justin said.

He added that he has talked with Luther High School Principal Jan Scheffler, who did not have time to talk with KOCO on Tuesday. She said standard policy is for all movies to be approved by school authorities before being shown to students.

When asked whether she approved of movies like "Saving Private Ryan," "Napoleon Dynamite" and "Spider-Man 3," Scheffler said she is looking into it.

Officials with the Oklahoma Department of Education are also investigating the allegations, noting that by law, students should receive at least six hours of instruction per day.

Any movies watched should be relevant to the course, education officials said.