We can give chemicals like oxytocin that will raise the level of empathy in someone. This is not exactly teaching or practicing empathy but my be a way to raise the empathy level in people.
Drugs
MDMA
Empathy Drug? Ecstasy Should Be Clinically Studied, Doctors Say
By Tia Ghose
MDMA, the active substance in the street drug ecstasy, can induce feelings of sociality and closeness with others.
"It has an effect in both animals and humans that, to my knowledge, is pretty much unlike that of any other psychoactive substance," Malenka told Live Science. "It uniformly causes this pro-social, empathogenic response," or warm-fuzzy feelings of empathy towards others, said Dr. Robert Malenka, a psychiatrist and neuroscientist at Stanford University"