The challenge at this design site is how to design an elementary school at the most crowded pulbic space of a city. So we used this problem as a value. The idea here is to design an elementary school integrated to public space. The building obtains free circulation to public at the ground floor while sinking down the playground for students. So there can be a visual connections between public and students while there is no pysical connection. While the box modules at the ground floor level are in use for public(except school circulation module) the other modules at upper levers for the school usage.