Mr Bean Season 4 Episode 17 Back to School Episode Title:Back to School.Episode Description:When there is no milk for his tea and for teddy, Mr. Bean goes to buy milk. However, instead of parking near the grocery store because of the traffic warden, he parks his car at a nearby school where he is mistaken by the principal as the new teacher and is forced to teach a group of juvenile delinquents, but he actually may be a better teacher than he thought.