Robin Mullins, 56, of Colerain Township, was sentenced Wednesday after pleading guilty to an assault charge for the incident, The Cincinnati Enquirer reported.
Mullins, who has worked in childcare for 32 years, was working at Andrew's Friends Pre-school and Day Care in Colerain Township April 10 when she witnessed a 5-year-old boy bite another child, police said. To teach the boy a lesson, Mullin bit him, leaving a fist-sized mark on the boy.
Police were called to the scene and Mullins quickly admitted biting the child.
"I'm sorry. Bad decision," Mullins said at Wednesday's sentencing hearing.
Hamilton County Municipal Court Judge Bernie Bouchard said: "Two wrongs don't make a right. You were paid to lead by example. You failed to do that."
Mullins, who lost her job after the incident, was ordered to get anger management treatment and to stay away from the child she bit.