WinterM Preview! In January, Messmer High School goes into WinterM mode. WinterM is a mid-year term for twenty instructional days that gives students a chance to recover credit, participate in enrichment courses, take courses designed to reach grade level for some students, and/or earn certification courses such as welding, carpentry, CNA, and phlebotomy. Here are some of the incredible WinterM courses that will be offered in January 2025: CNA AFRICAN BRAIDING NAIL TECHNICIAN CARPENTRY PHLEBOTOMY TAEKWONDO 8 Campus Happenings