You are not wrong.

When I was in junior high a bunch of us bussed to school and had to stay for lunch. All the rooms were locked so if you forgot a book in your classroom or wanted to get something from the band room you had to ask the lunch lady for the keys. They would always tell their eyes and sigh and make you wait forever then give you the keys like fifteen minutes before lunch was over.

I day a bunch of us from grade 7-9 worked a plan. A kid asked for the keys to get their forgotten lunch from a classroom at the very start of lunch after complaining their stomach was upset.

They got the keys and said they were going to use the washroom first then get their lunch. The master classroom key was removed from the ring.

Another student was in the next stall in the bathroom closet to the entrance by the office left unlocked. We were allowed to come and go. They took the key under the stall and ran outside, jumped on a bike another kid had unlocked and biked to a convenience store that cut keys.

Key cutting was done and paid for. The key was returned to the ring and the ring was given back to the lunch lady. The kid got a hard time for being gone so long but insisted it was from an upset stomach and they had been in the bathroom all along.

Now, we had a key and could come and go as well pleased within the school. The grade 9s held the key, very few people knew about it, and it was passed down each year.

If you tried to pull that crap now you'd probably get caught on video or something.