“The headmaster of school No. 81 resigned of her own free will,” RIA Novosti quoted the press service of the city administration.

A 15-year-old student attacked a teacher in Ulyanovsk in a math class on Wednesday, February 26. A criminal case has been instituted on this fact.

The governor of the Ulyanovsk region Sergey Morozov commented on the incident, calling it a egregious incident.

It was reported that the teacher, who was attacked by a schoolboy in Ulyanovsk with a knife, is in intensive care.