This study aims to consider relation between change of utilization in space and planning concept through the document research and interviews about Makomanai Elementary School in the 47 years history. In the situation of declining birthrate and aging population today, it is started to discuss closing and integration of four public elementary schools in Makomanai area. Makomanai Elementary School has open space which is used for work space, playroom and gymnasium. As a result of analysis on the history of utilization, the following has become clear; The Open space could be reviewed as a pioneering work. For a long time, the open space has been used for many children, teachers and other people in diverse ways.