A male teacher in Uthai Thani province was dismissed for posing nude at his school while wearing only a Batman mask, according to the Education Ministry.
Siripong Angkhasakulkiat, spokesperson for the ministry, said on Wednesday that the teacher, whose name was withheld, was expelled following a decision by the Teacher Civil Service and Educational Personnel Commission.
The commission determined that his actions severely frightened students. As a result, the Office of the Basic Education Commission awarded salary increases to two teachers who reported his behaviour for protecting their students, said Mr Siripong.
The decision came after a fair investigation over two months, he added.
The teacher, who reportedly taught mathematics, made headlines for posting inappropriate videos of himself at the well-known school.
The video clips showed a man in a khaki uniform who undressed in a classroom. He wore only a mask, with a chain around his neck and an object hanging from his genitals. He videotaped himself in a school corridor and along a roadside pavement while pretending to urinate like a dog.