Steve is a student at a public high school. He feels that the principal has unfairly targeted him for discipline because Steve habitually wears T-shirts on campus promoting sexual licentiousness and drug use. Which of the following arguments is most likely to be made by the school district in support of its principal? Group of answer choices The principal is a public employee who is entitled to express himself if his expressive interests outweigh any injury his actions may cause the school district. The school is a non-public forum and viewpoint focused restrictions would be impermissible, except for the fact that Steve, as a student, is presumably not entitled to fully coextensive free speech protection as would be accorded an adult in a non-educational environment. The school is a limited public forum and the principal is restricting Steve's attire permissibly based upon the viewpoint expressed on the T-shirts. Students completely shed their constitutional rights to freedom of expression at the schoolhouse gate