HAPPY 100TH DAY OF SCHOOL! PERFECT for super hero superhero comics lovers, school room moms, students, teachers, principals, and more! Celebrate 100 days brighter and cooler in style! THE PERFECT SHIRT for celebrating 100 days of Elementary School - Preschool, Pre-K, Kindergarten, 1st First, 2nd Second, 3rd Third, 4th Fourth, 5th Fifth and 6th Sixth Grade! Counting 100 chalk marks and hash marks together! Lightweight, Classic fit, Double-needle sleeve and bottom hem