Oh boy! There's so much to kerning that I don't think they'd be able to teach it at school. Becoming expert at it means spending years deeply in love with the shapes of letters. Kerning is a very nerdy business. They should call it nerding, in fact.
I'm not expert but I can spot the worst kerning mistakes in a font and if I'm using Photoshop, it's easy enough to correct them. If they're in Word, they just have to stay as they are.