50 Best 100th Day of School Shirt Ideas (2024)

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By the time that a hundred days of school roll around, it's easy to feel a tad overwhelmed, whether you're a teacher, parent or kid! You might want to take a nap more than you want to celebrate. Luckily, these 50 T-shirt ideas for the 100th day of school are fun, easy and most of all — genius.

Easy Last-Minute DIY Ideas

We've all been there. It's the 95th day of school and you don't have a T-shirt design! Luckily, you can do most of these ideas quickly with a shirt and some fabric paint or iron-on designs.

1. Hip, Hip, Hooray, it's the 100th Day - Keep it simple with this cute rhyming slogan written with fabric paint on the front of a shirt.
2. Player: Student, Level: 100 - Alter the font to make this shirt look like the interface of your student's favorite video game. (Or, if you're designing shirts for class, you can have the shirts say: "Player: [Teacher's Name]'s Class" instead!)
3. Tally Marks - If you're looking for a basic design that everyone will love, create a shirt with 100 tally marks for an easy, versatile look.
4. 100 Days of Genius - Okay, we're partial to this shirt. A picture of a lightbulb with "100 Days of Genius" on the back!
5. 100 Magical Days - Add a wand or wizard's hat to accompany this design. Shake some glitter onto the shirts as "pixie dust."
6. 100 Days Sailed By - A simple graphic of an ocean wave is great for this nautical idea. This design is perfect if your school mascot is a marine animal.
7. We Went 0 to 100 Real Quick - Use this popular, car-inspired saying as the basis of your T-shirt design and add small car stickers.
8. 100 Days of Bugging [Teacher's Name] - Add 100 cartoon bugs to this design in order to get the full effect.
9. I Went to School for 100 Days and All I Got Was This T-Shirt - You don't even need a design for this T-shirt, just the slogan. You'll cut down on costs and get a few laughs.
10. 100 Days of Being a [Your Mascot] - Design a shirt that doubles as spirit wear by adding your mascot to it.
11. We Keep it 100 - Use this popular slang phrase for a fun T-shirt design.
12. 100 Days Flew By - Use small airplane or helicopter images to accompany this slogan. Or, add stickers of any flying critter!
13. 100 Days of [School Colors] - Tie-dye a shirt in your school colors. For example: "100 Days of Purple & White!"
14. 100 Days at [Your School] - Show your school spirit by designing a shirt that features your school's name and logo.
15. This is What 100 Days Smarter Looks Like - Design this shirt with an arrow pointing at your student's face.

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Fun Puns & Wordplay

There's nothing better than a goofy joke to celebrate 100 days of school. Try one of these cringeworthy puns to make the perfect T-shirt.

16. 100 Days… Count 'Em - If your student has been learning the values of coins, make them a shirt with different coin combinations that equal 100 cents.
17. Eye Spy 100 Days - Hot glue googly eyes onto this T-shirt design for extra laughs.
18. 100 Days of Harmony - Design a shirt with music notes on it — maybe even add a few measures from your school fight song!
19. 100 Days of Blossoming - If your school has any common flowers or trees around it, incorporate them into this T-shirt design.
20. Keeping it Sharp for 100 Days - A design with pencils and scissors is perfect for this T-shirt.
21. 100 Days of "Cray" - Design a shirt that look like a box of 100 crayons.
22. 100 Super Days - Design these T-shirts to look like Superman's costume. For added fun, schools can let students dress up in their own superhero costumes for the 100th day.
23. 100 Days Done —Don't Have a Cow - Create a black-and-white spotted shirt for this design. It'll be a win for parents — a ready-made outfit for free Chick-fil-A day!

24. Orange You Glad We Made It? - If your school is in Florida, this design is perfect — or if your school color is orange!
25. I Can't Bee-lieve it's Been 100 Days - A shirt with 100 cartoon bees is perfect for your sweet-as-honey students.
26. Feeling Like 100 Bucks - Design a T-shirt to look like a hundred-dollar bill — even though we all know your students are priceless. A collection of 100 monopoly bills also works!
27. We've Lego of 100 Days - This design would be perfect for a STEM magnet school. Glue Legos on your shirt!
28. 100 Days of Training - If your students love trains, try using this slogan. A conductor's cap for each teacher completes the ensemble.
29. We Put Our Hearts into 100 Days - If your 100th day of school falls near Valentine's Day, why not design a heart-inspired T-shirt?

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Custom Ideas

These ideas allow each student and/or class to make the shirt their very own.

30. 100 Days of Having a Ball - If your school is known for a specific sport, design a T-shirt with your school logo and the ball from that sport.
31. 100 [Teacher's Saying Here] - Teachers are patient — and they have to repeat themselves (a lot). Print something that the teacher frequently says on a shirt. Maybe the students will finally remember!
32. Thumbs Up for 100 Days - Order white T-shirts, then have an ink pad in your class so each student can put a thumbprint on his or her classmate's shirt.
33. 100 Days of _____ - Leave space blank on each shirt where each student can write his or her favorite part of school!
34. 100 [Your Mascot]s - Showcase one hundred different versions of your mascot by having each student draw the mascot on their shirt (using fabric markers).
35. 100 Days with My Friends - To create a memento for your students, let each student sign the back of their classmates' shirts.
36. 100 Days in [Teacher's Name]'s Class - Draw a group of your mascot onto a T-shirt (for example, a flock of eagles) and underneath each individual mascot, write the name of a student in your class. If you're designing for a school, you can make the names apply to teachers instead.
37. 100 Things I've Learned - If you're trying to design an elaborate shirt, ask students what they've learned, then make it into a list that you print on the back of the T-shirt. A few will surprise you!
38. 100 Words I Know - Create a vocabulary list of words your students have learned and print them on a fun (and educational) shirt.

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Shirts with Extra Celebration Ideas

Looking for additional ways to celebrate the 100th day to go along with shirts? Look no further than these ideas.

39. I Blew Through 100 Days of School - Your school might not allow gum, but you can allow this bubblegum-inspired T-shirt — and you can give out gum at the end of the day for kids to chew at home. Or you can attach 100 pieces of gum to a shirt for a fun design.
40. Thanks for "Bearing" With Me for 100 Days - Give out gummy bears with this shirt. Bonus if your school mascot is a bear!
41. I Survived 100 Days - Hand out Band-Aids with this shirt for kids to wear as a joke. Just make sure the parents know ahead of time, or you might get some worried looks!
42. 100 Days of Winning - If your 100th day celebrations involve any kind of raffle, tape a ticket to each shirt as you hand them to students.
43. 100 Days Popped on By - Give out bags of popcorn with this snack-worthy shirt.
44. Sweet! 100 Days of School - Attach a piece of your class's favorite candy to each shirt.
45. Donut You Know? It's the 100th Day - These cute donut-inspired shirts pair perfectly with a fresh dozen.
46. 100 Days of Learning We Can't Erase - Hand out fun erasers to each student with this T-shirt.
47. 100 Days That Rocked - If your class is doing a geology unit, why not count out 100 different types of rocks and hand out some rock samples with this T-shirt?
48. 100 Days Brighter - Hand out sunglasses with this T-shirt for a design that will leave everyone grinning.
49. 100 Royally Good Days - Treat your students like royalty by handing out crowns to go with this T-shirt. Add a craft to your celebration by having each child affix 100 jeweled stickers to their crown or shirt.
50. 100 Days? Piece of Cake - This one's pretty self-explanatory. Celebrate the 100th day of school with cake and T-shirts!

No matter how you recognize the 100th day of school, we hope you take the time to celebrate all the hard work that you and your students have put in. Finish strong, geniuses!

Kayla Rutledgeis a college student who spends most of her time writing, singing for her church and eating quesadillas.