Plainfield East High School doesn’t have a senior class. But it clearly possesses a new staple of American education: “sexting.” I urge a surely chagrined Principal Anthony Manville to buy several large boxes of fig leaves.

A 16-year-old honors student took a nude photo of herself, used her cellphone to send it to a friend and, bingo, for the last two weeks the photo has made the rounds of the three-year-old school with 1,300 students. Plainfield police seized some students’ phones and passed them on to computer forensic experts at the Will County Sheriff’s Department.

The school is contemplating punishment, the police are interviewing students and James Glasgow, the Will County state’s attorney, is mulling whether to prosecute anybody under Illinois child pornography statutes. In the meantime, everybody can spend time off over the holiday cheerfully consuming “Teens and Sexting,” a study just completed by the Internet and American Life Project at the Pew Research Center.

Based partly on a survey of 800 teenagers, parents and guardians, it underscores the role of cellphones “in the sexual lives of teens and young adults.” Four percent of the teenagers indicated that had dispatched “sexually suggestive nude or nearly nude images or videos of themselves” via text messaging, while 15 percent claimed they had received such images of a person they know.