Teachers struggling with rowdy kids could take a leaf out of the book of these methods in China.
For these photos show the incredible discipline shown by children trained in martial arts, moving in perfect symmetrical harmony.
The teens were among nearly 2,000 performers taking part in a spectacular ceremony at the foot of the country's sacred Songshan Mountain.
Photographs from the ceremony capture hundreds of students from the Tagou School - the biggest martial arts school in China - executing a series of moves in inch-precise unison.
The Zen Shaolin Grand Ceremony unfolded on Monday against the stunning natural backdrop of the peak, which is home to a famous 5th Century temple that has been hailed as the cradle of kung fu.
Monks, singers, musicians, dancers and local villagers were among those taking part in the visual feast close to the Shaolin Monastery near Dengfeng, in Henan Province.
It is thought that martial arts have been known and practised at the Shaolin Temple throughout its history, which stretches back to 495AD.