Tools to Promote Your SNA Certificate in School Nutrition Congratulations on achieving your SNA Certificate in School Nutrition! To help you celebrate, SNA has a number of fun tools to help you share the news with your friends, co-workers and the students you serve.Facebook Button Share your success on Facebook or other social media sites with this downloadable button! Right click on the button to save and download the image. Customizable Cafeteria Posters These bright posters are totally customizable and come in a variety of sizes. There is even room to add a team photo. Just pick the option that works best for your school cafeteria or district office and get printing! 8.5 x 11” Customizable Posters 11 x 17” Customizable Posters 18 x 24” Customizable Posters