The locker rooms are maximized so that sophomores, freshmen, and those who participate sports would each have their own lockers to use. The issue with having to share lockers with a partner is solved.
What should I upload in this Develop Solutions step?
Consider uploading images (JPG, GIF) of your rough digital model. It's ok if your model is still a work in progress. Show an axonometric or perspective view with people, which will help others understand the scale of your library.