During our two weeks in Saint-Etienne, France, my four children attended full time school. (For my youngest, that means 4 days a week.) The three youngest went to one school, the eldest to another. Those were private, catholic schools, and my kids had a great time. They were incredibly well received, and they just fit right into daily class life. For them, this was an adventure, an experience.
Here they are, having a fresh croissant for snack after school.