The applicant teacher was acquitted of criminal charges relating to alleged sexual misconduct with a former student in 1991.
The Ontario College of Teachers subsequently brought disciplinary proceedings against him under 1997 regulations.
The discipline committee refused the applicant's request for an adjournment, proceeded in his absence, admitted the criminal trial transcript and judge's obiter findings without adequate reasons, and found him guilty of professional misconduct.
The Divisional Court quashed the decision, finding that the committee breached natural justice by arbitrarily refusing the adjournment and failing to provide adequate reasons for its decisions.
The Court also held that applying the 1997 regulations to 1991 conduct offended the rule against retrospective application of legislation.