Don't Touch Me!
In Japan, the best policy is to refrain from touching students. Taps on the shoulder, reaching out to help someone up from a fall, or even a high five, can be a problem. After all, this is a country of bowing to greet, right?
Your social actions by touching students may be inappropriate, especially for older students. Praise should be done with words rather than physical. Clapping for accomplishments is the best way to go. Why take the chance on problems arising?
In the western world, touching a shoulder or giving a hug is not a big deal, but no one should ever do it in a Japanese education location. Even if the student reaches out to grab your hand, you should avoid holding it to prevent misunderstandings by saying, "Sorry, no touching."