The water safety skill grade standard was developed in this study in order to improve water safety skills and to avoid the risk of drowning among college students.Expert interview,questionnaire,and screening were used to determine the grade standard,which included swimming skill standard and self-saving skill standard.The standard was classified into three grades(primary,intermediate and advanced),which was consisted of three levels(primary level 1-3,intermediate level 4-6,advanced level 7-9).The standard was examined by ...