Is Facebook public?

A high school senior put a photo of herself in a bikini on Facebook. A district school system used the photo and the student's name in a community seminar urging people to be careful about what they post. The student sued the school district claiming that it violated her privacy. She said she believed that only friends and friends of friends could see the photo.

Argue the case for the student.

Argue the case for the school district.

Assume you are writing an article on impacts of social media and have chosen to comment on this case. What will you say?