Hundredth Day Of School Ideas 2025. Here are 45 fantastic ways to have 100th day fun with activities, free hundredth day printables, party ideas, math, science and writing! Printables, activities, games, and crafts for young children to celebrate this milestone.

Lots of fun ideas for the 100th day of school. Use these 100th day of school activities and celebration ideas for teachers to help your students honor how far they have come this school year.