It’s like that stamp, coin, or one dollar bill that comes in marketing mail in your snail mail box. Use the stamp to mail your donation. (Who said I wanted to donate to your organization.) Use the coin for … (It’s not like a penny can even buy you a gumball anymore.) or the dollar for … (Seriously? You sent me a dollar in hopes I would donate or buy something you are selling.)
The same is true for those pictures. As a teacher, I hated picture day. Only a handful of my high school students would bring the order envelop with money or a check, but the whole class had to go down. (You should want to have your picture taken so that it will appear in the yearbook.)
You didn’t submit the order form or the payment. The company thought you just wouldn’t be able to say no to the pictures if you saw them even though you had already said no.
I would think that this issue would have come up in the company board room when this twisted way of getting you to purchase photos of your “darling” was brought up. They had to have discussed the possibility of the parents keeping the photos, the student losing the photos, or the parents scanning the photos.
Unless there is a water mark or a copyright mark on the photo, I would have no qualms about scanning the photos and sharing them.