TOLEDO, Ohio (AP) _ An art and religion teacher at a Catholic high school has been asked to resign over his side job _ he moonlights as a nude model.

``I honestly did not know there was anything wrong with it. This is the way God put us together,'' said Mark Jesionowski, who has taught at Central Catholic High School for 13 years.

The Rev. Michael Billian, pastor and president of the school, said he asked the 43-year-old teacher to resign last Thursday for failing to comply with the morals clause in his contract.

``There are a lot of issues a teacher commits to when he works for a Catholic school,'' Billian said. ``There are issues revolving around being a role model, of being a Christian model.''

Billian said he doesn't object to nudes such as Michaelangelo's paintings in the Sistine Chapel, but posing for such art is inappropriate for a high school teacher.

Jesionowski said he only did it to improve his own art.

``If I'm going to draw someone else nude, I want to know what it feels like on the other side of the pencil,'' he said.