About the only difference between the lockerroom in high school and my new gym now is that the gym has individual shower stalls. High school was a large tiled in area with two columns of shower heads on either end. The guys gathered around in a circle, so to speak to shower.

In college it was a bit different, but there were individual showerheads along the wall.

In the grown up world there's a bit more privacy in the bathing area, but that's about as far as it goes. Lockers against the wall, wooden bench on pipes stuck in the concrete floor. Doesn't smell as bad, though.