Touch on these points: -what you would change about the school -what you would ADD onto the schools rules or policies -explain why thats a good idea -remember to have 5 paragraphs -one way to make your school a happy place is to reinforce good behavior: if a student does something nice for someone else, they should be rewarded
You can make your school a happy place by helping you teachers out, helping other students if they need help. You can volunteer to help clean up messes so the janitor guy has a little less work which will make him happy. You can do your homework all the time for each subject/class so your teacher will be proud and NOT mad or sad cause you didn't do your work. This is just a little info. You can add more.
The second and third option are wrong because you do not need the colon to combine these sentences. The last one is wrong because those are not complete sentences, they are fragments.