100 Days Y'all Teacher or Student 100th Day of school. Perfect present for pre-K, Kindergarten, first grade, second grade or third-grade school students, teachers & principals. perfect for kids, teachers, girls, boys, adults, son & daughter Wear it proudly to school. Teachers and children can feel awesome being 100 days smarter! It's also a perfect teacher gift. A great teacher's gift idea. Great to celebrate your child or student's first 100 days of school or kids. Lightweight, Classic fit, Double-needle sleeve and bottom hem