Kadic Academy is where Ulrich, Odd, Yumi, Aelita, and Jeremie from the Code Lyoko show attend school.  It is a

A map of Kadic

Junior High and High School and the students live there in dormitories.  It is a private school especially for wealthy children and it has its own soccer team as well.   Ulrich is on the soccer team, as shown in the show.  It has a Dormitory Room, a Science Building, a Cafeteria, and various other locations.  The school was built in the early 1900's but the novels state that it was built in 1873.