Sarah Chang is a Columbia University graduate who will be joining McKinsey later this year. I came across a recent post of hers, and asked for permission to reproduce, which she has graciously agreed to.
She catches on to a few things that many students overlook. I always teach students the art of assumption-question, to always link numbers back to the original questions, to ask "so what?" and other tips and tricks that help you stand out as a candidate. It's a long list but worth the read. Her one mistake? Not numbering her points, in true consultant fashion!