Our school district has banned them! If you get caught once, they get taken away and the parent has to sign a paper to acknowledge the warning and be reminded that they are not allowed in school. Second offense, taken away and the child spends the rest of the day in the office alone doing their work. Third offense, one day suspension.
They wasted no time cracking down on getting these out of the schools.
Someone I know in PA said her kids' school just banned them today, too.