MT. VERNON — — Roughly 20 pre-kindergarten and Head Start students celebrated their 100th day of school Thursday at the Dr. Andy Hall Early Childhood Center in Mt. Vernon. The students belong to the class of Miss Felicia and Miss Michelle. Throughout the day, they participated in a variety of activities to mark the occasion, including making 100-day hats, learning a song, marching through the school and more. Miss Felicia's class celebrates the 100th day of school every year.