The 100th Day of School The 100th day of school is a special day in elementary schools around the United States. American schools start in September. So the 100th day is usually in February. It is a day of fun and learning. Students do not have regular classes. Instead, they enjoy games and activities based on the number 100! For example, they may make necklaces from 100 pieces of cereal. Or they may draw pictures of themselves at age 100. They may bring 100 special things to school for show and tell. The 100 things may be photos, stamps, crayons, or anything! What do you want to bring on your 100th day of school?