By Mark Haas, Crisis Magazine - In many Catholic parishes and schools today, it has become common to designate specific “themes” for Mass. A Wednesday morning school Mass might revolve around a theme such as light, joy, kindness, or unity. Students and teachers are often asked to help prepare a “Liturgy Sheet,” complete with song choices, Scripture selections, and, of course, a clear and catchy “theme.” Banners might be created, songs selected, and even suggestions (from lay people) of the direction of the homily—all to align with the “theme” of the day.