Amrik Nijran, a science teacher at Nottingham Academy, shared derogatory comments and pictures about Muslims and other countries on his personal Twitter account, which were seen by pupils.
He claimed his account was hacked, but a disciplinary panel found him guilty of unacceptable professional conduct.
The Teaching Regulation Agency (TRA) said his actions exposed pupils to "extreme material" and showed a "lack of tolerance and respect for the rights or beliefs of others," UK media outlets reported on Sunday.
Nijran, 69, faced investigations by the school, the local authority, and the police after sixth form pupils reported his inappropriate posts in November 2020. He resigned in March 2021, and the school referred his case to the TRA.
The TRA received reports that Nijran had shared images of hangings, made or shared sexist comments, and posted negative content about Muslims. The TRA concluded that his actions damaged the reputation of the profession.
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Marc Cavey, the author of the report, said: "I am particularly mindful of the shocking nature of some of the materials shared and their discriminatory nature, and the potential impact on the standing of the profession."
The report said he should be prohibited from teaching indefinitely and should not be allowed to teach in any school, sixth form college, relevant youth accommodation or children's home in England.
"He may apply for the prohibition order to be set aside, but not until 27 November 2025, two years from the date of this order at the earliest," it said.
Source: Agencies