A random memory about HS Senior photographs: Large photo shops from the big city sought out contracts with school districts to provide graduation photos for the entire class. In exchange they would provide a free camera and supplies for journalism classes. This was standard practice for decades.
When my classes time came, all 35 of us were loaded on a bus and driven on a two hour trip to the photographer. Most girls took along a case of makeup and a couple of outfits while we boys carried a pocket comb if even that. The boys were supposed to show up in a suit or sports jacket but most of us didn't own such a garment so the photographer had a few "loaners" on hand.
A few weeks later, we received a packet of proofs from which we selected the one we wanted.
When my son and daughter graduated, the system had changed and graduates went wherever they wanted for their class picture.