What should I do for a P poster?

Well Elementary and Middle Schools has P testing, It used to be PACT. I need cool ideas for the poster to let the students know that is serious. You have to study and pay attention(awake). But not all strict, make it fun with cool pictures(drawable) and animations. To tell you the truth I am trying to be the best in the cl. Hopefully you can help. Por Favor and Gracias.