The purpose of this study was to explore high school students' acceptance of the system schema. The subjects were 48 students of the researcher's class of the 11th graders. The research tool was "the System Schema Acceptance questionnaire". The results of the study were as follows: (1) The students thought system schema could help to learn the concepts of force and draw force diagrams correctly; (2) The students thought the defects of system schema included trouble, abstract, and the uncertain directions of the force that acted on the object and they did not always use system schema to solve problems.