If you are making a poster on 'EQUALITY' in school, make sure you add a lot of qoutes, about how everyone in this world are equal. No one deserve's more, and no one deserve's less. All are equal. The political rights must also be equal to all. Everyone deserve's to live peacefully in this world. Therefore, it is important to always remember that we all are equal, no matter where we come from, what skin color we have or our class (whether low-class or high class). We can only live in peace and harmony in this world, if we all believe that we are equal. Emphasise this importance in your poster.
Hope this helps. ✌