Multi-criteria decision analysis (MCDA) is a way to help people make decisions that involve more than one choice. It looks at all of the different criteria that you have to think about when making a decision, and then it helps you weigh those criteria so that you can choose the best one. For example, when deciding which school to attend, you might have to consider things like how far away it is, how much it costs, and how well it succeeds at preparing students for the future. MCDA helps you figure out how much each of these criteria should matter when making your decision.