The incident took place when the victim prepared for the in Aubervilliers, a suburb in Paris. He was attacked with a box cutter or scissors like weapon, reported BBC.
This attack was carried out a month after the Paris attacks last month that claimed 130 lives.
According to report, the attacker shouted: "This is for Daesh [Islamic State]. It's a warning", stabbing the teacher with a box cutter or scissors before fleeing.
The victim working at the Jean-Perrin preschool, which caters for children between the ages of three and six, is out of danger.
The attacker arrived wearing a balaclava and gloves did not carry any weapon rather he used weapons found in the classroom.
The attacker fled on foot and is still on the run. A manhunt is under way. No children were present in the class at the time of incident.
An investigation has been initiated by the anti-terrorism branch of the Paris prosecutor's office in this case.