Happy 100th Day of School - It's Been A Wild 100 Days, cool and great 100 days of school costume for kindergarten, preschool, middle school, elementary school and for students or teachers, men, women, kids, boys and girls, mom, dad. Happy 100th Day of School - It's Been A Wild 100 Days Gift. Makes a fun gift for students and teachers to celebrate 100 days of school. Celebrate being 100 days smarter in this cute 100th day tee Lightweight, Classic fit, Double-needle sleeve and bottom hem