If u haven’t seen dress coded part 1 you should go read it. ( btw SPOILERS!!) So in the book lots of Molly’s friends get dress coded for wearing tank tops on hot days or having spigeti straps (cause the teachers think that these clothes distract everyone from learning). so they report this so they can get a petition but that doesn’t work, so they make posters to protest. in the morning before school molly and her friends walk in and hang up all the posters (they got caught). because people told the principal about Molly’s podcast and how she’s been trying to  compromise the dress code. Because of the posters molly gets detention for vandalism even though posters are not vandalism.