Melissa Petro exposed her prostitution past on The Huffington Post. Credit: Tomas E. Gaston, Splash NewsHot for teacher! Melissa Petro, a 30-year-old elementary school art teacher in the Bronx, has admitted that she was a prostitute, the...Too sexy for your school? New York teacher admits to sex worker past. Guess what? Parents aren't too happy about it, either.