100th Day Of School is January 20th
Did You Know?
The 100th Day of School is a fun milestone celebrated in elementary schools, typically in late January or February, marking when students have attended 100 days of classes, offering a chance to celebrate learning through number-focused activities like counting 100 items, creating 100-themed art, and recognizing progress in math and reading. It's a tradition started by a California teacher in 1979 to make the number 100 concrete for young learners, often involving dressing up as "centenarians" (old people) and completing projects that show what they've learned. What it is: A celebration of completing 100 days of the school year and a way to reflect on learning and growth.
01/18/2026