Basic teacher's outline of dress code in Korea.
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You don't really have to follow them but, most places will not allow low cut shorts, sandals, and low-cut shirts/tops are may unacceptable for either gender.
Also If your position is teaching baby- young kids, too much makeup, such too much piercing may cause some issues with parents.
Also If your position is teaching baby- young kids, too much makeup, such too much piercing may cause some issues with parents.