A claim of unfair treatment by an ex-teacher at an Islamic school was absurd, an employment tribunal heard.
The King Fahad Academy is funded by the Saudi royal family
Colin Cook, 58, is claiming unfair dismissal, race discrimination and victimisation and seeking £135,000 in compensation and damages.
He said he was sacked from the King Fahad Academy in Acton, West London, after blowing the whistle on students cheating in public exams.
Resources director Phil Garrard said he was dismissed for other reasons.
"The allegations that he was being set up and falsely accused were absurd," Mr Garrard said.
He told the hearing in Watford that the school launched an internal investigation into the exam straight away.
He added that he began looking into alleged issues around Mr Cook's conduct in a separate investigation arising out of that exam.
Earlier Mr Cook had alleged the school preached "race hate" to its students.
He told the tribunal at its session last Thursday that it taught students from a textbook which called Christians pigs and Jewish people repugnant.
Simon Cheetham, for the school, said Mr Cook could not prove his claims that the specific offensive passages were used in lessons.
The hearing is continuing.