“Work hard, be kind, and amazing things will happen” — Conan O’Brien. Click here for 100 Happy Back to School Quotes for kids, teachers, and parents. Celebrate the return to the classroom with these motivational, encouraging, and funny quotes that are perfect for a lunchbox note. Make the first day of school special for your child in kindergarten, elementary, middle school, high school, or off to college for the first time. Have a happy school year!