KORAPUT: Teachers in the primary section of Saraswati Sishu Mandir at Koraput left the school today alleging mis-behaviour by their headmaster. In a letter to the secretary of the school, these teachers have alleged that their headmaster was not able to manage the school activities in the way that was required. They have warned not to return to the school till the matter was resolved. Parents of the school with more than 1,000 students have appealed the management to intervene at the earliest to save the academic future of their wards.