Abstract
This study aimed to development of Scale to Cooperative Relationship Assessment Tool for Inclusive Education, its content validity was verified with draft of the Cooperative Relationship Assessment Tool for Inclusive Education. The survey data collected from the 291 teachers of Special Needs Education in Okinawa prefecture between August and October 2015. In the result, Cooperative Relationship Assessment Tool for Inclusive Education has good content validity. One of the shortcomings is the verification of content validity depending on experts subjectiveness which is lacking science. Therefore, we need to analyze the credibility and construct the validity in order to make a better itemized list.
