The purpose of this study was to develop the criterion for observational movement evaluation of pushing off the wall and gliding movement in streamlined position for the 3rd grade children of swimming classes in elementary school of physical education and to verify its effectiveness. Participants in this study were 3rd grade 22 children (11 boys and 11 girls) and 24 children (11 boys and 13 girls). Specifically, pushing off the wall and gliding motion in streamlined position performance test was conducted, and the analysis was performed according to 2 data: reaching distance and motion score.
　The main results were as follows:
　1. The reliability of this criterion was high because the response stability and consistency in the movement evaluation of the pushing off the wall and gliding motion in streamlined position were significantly recognized.
　2. The validity of this criterion was high because there was a significant correlation between pushing off the wall and gliding motion in streamlined position performance score and the reaching distance.
　These results indicated that the developed criterion can be used for the movement evaluation of pushing off the wall and gliding motion in streamlined position for children in the 3rd grade. However, this criterion needed that the applicability to children in other grades to be verified again since it was demonstrated only for children in the 3rd grade.

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