is a 1937 British comedy film directed by Marcel Varnel and featuring Will Hay, Graham Moffatt, Martita Hunt, Lilli Palmer and Peter Gawthorne.

Will Hay plays the roguish headmaster, Dr Twist, of a dubious boarding school for boys.

Colonel Willoughby-Gore attempts to sack the incompetent Twist but is foiled when he and his boys, after fraudulently gaining resounding success in a French examination, are invited to Paris by the French ministry of education.

In Paris they become involved with a gang of criminals, including escaped convict Arty Jones, father of one of the boys, and Yvette, a night club singer, who are attempting to steal the Mona Lisa from the Louvre and replace it with a duplicate.

Allmovie wrote, "the magnificent Will Hay re-creates his vaudeville characterization of a supercilious schoolmaster...But the inimitable, toothless Moore Marriott (aka "Harbottle") is conspicuous by his absence.