Most handles have a part that is the "outside" which goes on the unsecure side of the door. Due to safety the outside of the handle has a way to operate it if it locks. Keys for keyed locks, or a bypass for privacy handles. I was saying if that was the outside of the door, it's not a locking handle it's a passage handle.

The "inside" of a handle is the side that's installed on the secure side of the door, and it's the side you can access the screws that hold the handle on the door. On classroom and storage function handles, they can't control the doors locking state from the inside, but they can always operate the handle to get out.

By unsecured I generally mean the side of the door with the least restricted access. Like the outside of your house when thinking about a front door.