Montreal's largest school board has been ordered to rehire a teacher who had been fired for failing to disclose to the board that he had killed his wife in 1990.

Jean-Alix Miguel had pleaded guilty to the crime and was sentenced to seven years in prison.

In 1998, the Commission scolaire de Montréal hired him to teach electronics to adults at a construction trade school in Montreal's east end.

The board fired him in 2004 when it learned about his criminal record, something he had not told the board about when he was hired.

An arbitrator later ruled that Miguel's dismissal violated Quebec's charter of rights, because his crime did not in any way relate to his work.

The board appealed the arbitrator's ruling to Quebec's Superior Court, but the court ruled in favour of Miguel on Wednesday.

The board has 30 days to appeal that decision.