In it, the 30-year-old teacher called her students “disengaged, lazy whiners” and complained that they are “just generally annoying” and “disobedient, disrespectful oafs.” Online comments applaud her for taking a tough love approach or excoriating her for verbal abuse. She’s attracted media attention, and backers have started a Facebook group.

Munroe did not use her full name or identify her students or school. A school official did not return a message Tuesday.