I know there are a couple of school hallways with lockers products, some being sold here. Those lockers look like a set of lockers I downloaded from some anonymous freebie 3D object site. (Legit, mind you. :) ) The reason I say that is because they are small-footprint lockers, doublstacked, with top and bottom vents and locks with them. Though, I don't remember the locks being attached, so that may be an addition.

There is a free set of lockers on ShareCG (Large full-size locker section) and there are plenty of lockers available on various architectural sites. It's usually not difficult to break them apart and reset the door centers and save them as props you can combine.

Do a search here for "school." I KNOW there was a product that had several school interiors, including a detailed hallway. If you can't find it or it has been discontinued, check DAZ and, lastly, just grab some free 3D lockers somewhere and have fun with them. :)