It also states that: the School recognizes the right of students to express themselves. With the right of expression comes the responsibility to do it appropriately. Students may distribute or display, at appropriate times, non-sponsored, non-commercial written material and petitions; buttons, badges, or other insignia; clothing, insignia, and banners; and audio and video materials. All items must meet the following school guidelines: A. A material cannot be displayed if it: 1. is obscene to minors, libelous, indecent and pervasively or vulgar, 2. advertises any product or service not permitted to minors by law, 3. intends to be insulting or harassing, 4. intends to incite fighting or presents a likelihood of disrupting school or a school event. 5. Presents a clear and present likelihood that, either because of its content or manner of distribution or display, it causes or is likely to cause a material and substantial disruption of school or school activities, a violation of school regulations, or the commission of an unlawful act. 17 B. Materials may not be displayed or distributed during class periods, or during passing times between classes. Permission may be granted for display or distribution during lunch periods and after school in designated locations, as long as exits are not blocked and there is proper access and egress to the building. In order to insure whether or not materials they wish to display meet school guidelines, students must present them to the principal twenty-four (24) hours prior to display.