LORELAI: Why are you being such a snob about this? You went to hotel school.
MICHEL: I attended the Ecole Hôtelière de Genève.
The Ecole Hôtelière de Genève is a Swiss tertiary-level school in a 18th century mansion in Geneva, dedicated to hotel and restaurant management. It was originally the Ecole Cafetiers-Restaurants, founded in Neuchâtel, Switzerland in 1914. It moved to the Geneva property in 1951, and its current name dates to 1996. It is ranked in the top ten of the best hotel schools in the world.
Michel said that he left France at the age of 18, and presumably it was to study here in Switzerland. The diploma course lasts for three years, so Michel would have graduated when he was around 21.
The Annotated Gilmore Girls 