Happy 100 days of 2nd Grade design for teachers or kids! Happy 100th Day of Second Grade! Teachers and children can feel awesome being 100 days smarter! Surprise your classmates by wearing this adorable 2nd Grade rainbow design. Funny 100th Day of School tee for 2nd Grade students and teachers to celebrate 100 days of school. Celebrate your child or student's first 100 days of school or Second Grade with this cute design. Lightweight, Classic fit, Double-needle sleeve and bottom hem