Sinead O'Connor is certifiable:

Sinead O'Connor says she plans to teach religion after quitting the music business this July.

"I am retiring because I want to train to become a religion teacher of primary school children," the 36-year-old Irish singer said in a letter published Thursday in Dublin's Evening Herald newspaper.

"This will take some years as I also want to raise my own children, so it may be over 10 years 'til I qualify but I intend to make a start."

O'Connor, who has two children, said she also plans to work as a "visiting" church singer, "where I can hide and not be looked at. And maybe sing with a choir. Hire myself out for services. NOT WEDDINGS! Don't believe in them!"

Her final recording, a DVD titled, "Goodnight, thank you. You've been a lovely audience," will be released in July.

O'Connor, who married for the second time in 2001, said she hopes to start studying theology in September. She is particularly interested in a group called Death Midwives.

"They help people who are dying not to be afraid and help make death gentle and calm and even a growing experience," she wrote. "I am very interested in that area of pastoral care."

Ripping up a picture of the Pope was bad enough. This is loony.