Green Mustache Day 2017 Poster - 11 x 17 - CopyOn Wednesday, March 8, students in grades K-5 will participate in “Green Mustache Day,” a fun annual activity just in time for St. Patrick’s Day. During lunch, healthy green smoothies made by high school students in Mrs. Lewis’ cooking class will be offered for tasting. Students who try the green smoothie will have their pictures taken and be entered into a drawing to win a prize! March is national nutrition month. Atlantic Christian is participating in Green Mustache Day as part of its membership in the AtlantiCare Healthy Schools, Healthy Children program.