Historical Room Selection data (ranging from 2020-2022) is provided by Columbia Housing for reference only. The selection process shifts year to year and can change based on a number of variables that will impact how students pick rooms, including changes in building allocation, personal preferences, class size, external factors and more. This data should not be used as a predictive tool nor does it provide any guarantee for selection options. Learn how our lottery predictor works to make the best use of its results.