Schools enforces no high five rules.

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School enforces strict no-touching rule - Education - MSNBC.com

This is taking too far. Those school principles are bunch of no life nerds. No hi five? No touching? No hand shakes? No helping hand when someone need it? The world will end up with people that have no social life. There will be no love. Everyone will be isolated and selfish.

Sure physical contact can leads to violance or harrasments, but that's something kids should learn how to deal with it. If they never experience it, if they never make a mistake, they will never learn. You can't build character will all those restricted rules that protect the weak from real world challanges.