Was Dumbledore a Transfiguration Teacher?

In a new interview with Entertainment Weekly, Jude Law confirms that Dumbledore is not a Transfiguration teacher “at this stage.” This is significant because canon has dictated that Dumbledore was the Transfiguration teacher during his teaching years at Hogwarts.

What did Dumbledore teach when he was a professor?

During Tom Riddle's time at school, Merrythought taught DADA and Dumbledore taught Transfiguration. The assumption up until last week was that Merrythought and Dumbledore taught DADA and Transfiguration, respectively, for their entire pedagogical tenure.

Who was the Transfiguration teacher?

Minerva McGonagall was the Transfiguration Professor from 1956 until 1998, the year in which she became Headmistress of the school. Before her, Albus Dumbledore taught Transfiguration.