Elementary school safety were not dominant concerns when most of our current school facilities were designated. Perhaps school safety was not a pressing issue and ranked lower on the list of priorities that drive school design. But, because there had been an increasing number of child sex offenses designing safer school emerge. Crime Prevention Through Environmental Design(CPTED) helps us to understand how the physical environmental affects human behavior. It also has been applied with considerable effectiveness in making school sites safer and more secure in recent years throughout the developed nation. But the country is the initial level. The survey include 30 enhancing safety elementary schools at Gwangju city. After carefully studying and analyzing them, create a checklist. The three primary approaches to consider in this regard are (1) the appropriate use of school security technology (2) employment of school resource officers; and (3) use of CPTED principles and technigues. Used in combination, there three approaches can be effective in reducing the probability of a child sex offenses. This safer school technology must be used in schools across the country soon.