I would think the persons who distributed the photo would be responsible for most of the charges. This guy just showed his wang one time in public. He had no control over the reproduction and distribution of the image.
I agree, the charges should be against the Photographer, School ADMINISTRATORS, Publisher, and even the POST OFFICE or Delivery Company for Distributing it.
As the editor of my HS yearbook (many years ago), I can attest that students try repeatedly to get something “funny” in the pages. Gotta inspect every bit of copy, every photo, every layout carefully, and with multiple layers of review. The lead photographer was a hilarious, irreverent guy, also some of the other editors. Had to set boundaries and reel them in on occasion. We still had some controversial stuff in the pages that I & the yearbook advisor approved — early 70s. Can’t necessarily go after the publisher or shipper. They produced and deliver yearbooks for so many schools; they won’t catch everything.
I was tending to agree. Did he even know they were using that particular picture?