I think school is so much harder than real life. People are so much more accepting when they are adults.
You must always steal, but only from the best people. Steal any trick that looks worthwhile. If you see Vivien Leigh or Robert DeNiro or Meryl Streep do something stunningly effective, and you can analyze how he or she did it, then pinch it. Because you can be sure that they stole it in the first place.