Same thing down here. Lifetime take these photos for the Seniors to go in the yearbook. They take all of the others so that IF you want to purchase a package that is an option..
We did not care for the photos they took. Too posed for our daughter .
So my husband, who is a photographer took photos of our daughter. We used the photo our daughter liked best to go with her Graduation Party invites.
There are tons of photographers that offer this service. The student can take the out fits they want to wear, they can rent a Tux, They can take their robe and Morter Board (Many studios have these in the different school colors).
These personal photos can be taken at any time during the year..
Some people send out photos with the graduation announcements at the end of the senior year. Some people use some of these photos for the different Senior photos in ads, that parents may purchase for different end of the school events.
At Christmas we gave some framed photos to the Grandparents.
But our daughter is not a traditional kid. So these posed studio things and posed photos are really just not her style.
Some of our favorite photos that year were her in her Graduation robe was at Baccalaureate and Graduation. She was glowing, excited and looked so different from the beginning of the school year.