An eight-day celebration, Passover marks the liberation of the children of Israel from bondage and their subsequent exodus from Egypt. A Passover seder - a meal following a specific ritual order retelling the story of the exodus, and including prayers, songs, and special food - is one of the most commonly observed Jewish practices. In addition to attending seders, many Jews observe Passover by refraining from eating or benefiting from chametz - bread or wheat/grain products, for the duration of the holiday. Brandeis does not hold classes during Passover.