Think about the discipline you plan to pursue at Columbia. Consider what you like (love?) about the discipline. Why are you interested in it? What drives you to it? Write two pages explaining why you chose that discipline. Try to convince your reader that the discipline is worth pursuing. Use specific details and information to make your case.
Try to make your essay coherent and organized. You don't need to start writing immediatelythink about what you are going to write for a few moments before you begin. When our 30 minutes has elapsed, we will share our pieces with one another.