Several studies have examined the relationship between school conditions and student achievement, and have confirmed that the two ideas are related to each other. The present study focuses on reviewing and comparing the views of 350 students and 60 teachers of 5 elementary schools in Kashan city about 4 hypothesis of designing open and semi-open spaces of school. Therefore, the aim of this study is determination the importance of 4 hypothesis from the viewpoints of students and their teachers to understand which of hypothesis are suitable and which of them are not suitable to use in designing of open and semi-open school spaces. This study is non-experimental and a descriptive research “methodology” design was used. The results of this study indicated that for designing open and semi-open spaces of school, using Non-fixed and dynamic elements is best idea; also using semi-fixed elements such as temporary semi-open spaces, furniture for sitting, is a good idea; but using fixed elements such as shape, form, decoration, material, symbol or Position and extent of school space such as layout and relationships between space are not a suitable idea for designing open and semi-open spaces of school.