Personalized learning isn’t the latest fad in education. In fact, it’s an approach that great teachers have long used to ward off drudgery, to challenge students to do their best and to infuse their classrooms with energy and a sense of possibility. Thousands of years after Socrates engaged and challenged his student Plato with dialogues that inspired him to write The Republic, Charles Babbage encouraged Ada Lovelace to use her mathematical talents to create what is now considered the first computer program.