Celebrate the 100th Day of School in Kindergarten (Big Fun + Learning!)

The 100th Day of School in kindergarten is one of the most exciting milestones of the year! It’s a special day to celebrate progress, count to 100, and fill your classroom with laughter, engagement, and meaningful learning. Whether you’re planning math challenges, writing activities, crafts, or centers, this day can be both educational and unforgettable.

It is time for the 100th Day of School in Kindergarten. Check out these 100th Day of School ideas.

What Is the 100th Day of School?

The 100th Day of School is a fun classroom tradition where students recognize being in school for 100 days and explore the number 100 through hands-on learning. From counting to 100, building structures with 100 items, creating 100 Days Smarter projects — the possibilities are endless!

We had a blast celebrating our 100th Day of Kindergarten!

Classroom-Approved 100th Day of School Ideas for Kindergarten

Here are some of my favorite 100th Day of School activities for kindergarten that your students will LOVE:

Math and Counting Activities

Count to 100 using a hundreds chart
Build a structure using 100 blocks, cups, or manipulatives
Gather 100 items around the room (buttons, beads, stickers) and count them as a class

Hands-On Crafts & Themed Projects

Make a 100 Days Smarter necklace with 100 cereal pieces
Decorate glasses or hats with 100 dots or counting to 100 by 10s

Writing & Reflection

Have students write about what they would do when they are 100 years old
Make a list of 100 Words to build writing confidence

Movement & Classroom Fun

Try 100 jumping jacks, 100 dance seconds, or 100 steps around the room to celebrate the milestone with movement and joy

Grab Your Free 100th Day Printables!

I’ve made planning 100th Day of School activities in kindergarten easier with a set of free printables you can use right away!

100th Day of School Freebies – Free Download!

This freebie includes engaging activities like:

✔️ I Could Eat 100… writing page
✔️ Build 100 counting challenge
✔️ Stamp Your Way to the 100th Day activity
…and more fun sheets you can use in class on your big 100th Day celebration!

It’s perfect for math centers, morning work, or extension activities tied to your 100th Day celebration.

Teacher Tips for a Successful 100th Day

Prep Ahead: Set up stations with clear expectations so students can rotate independently.
Mix Academics + Fun: Use counting challenges alongside crafts and movement breaks to keep everyone engaged.
Celebrate Learning: Hang student work, take photos wearing their fun creations, and let them share their favorite activities.

Extend the Fun Beyond One Day

Don’t stop at just one day! You can embed the 100th Day theme into week-long math centers, writing prompts, or class discussions about numbers. These extensions help reinforce counting skills, place value, and collaborative learning.

I used the the Aging Booth App to turn

my little 5 and 6 year olds into 100 year old cuties. They loved coming back from lunch and finding their 100 year old pictures.

We wrote about what we could eat 100 of, made 100 hats, stamped 100 stamps, built 100 with the million Target Dollar Spot erasers that I have purchased, wrote 100 words, read 100 books and counted to 100 several times. At the end of the day I was exhausted and ready for pajamas and bed!