Personalized Sailing 100 Days 2nd Grade Youth T-Shirt. Funny 100th Day of School Youth T-Shirt - Heather for 2nd grade, primary school teachers with sailboat and stars. My Kids Sailed Through 100 Days of 2nd Grade. Celebrate your students being 100 days smarter. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.