Secret Bathroom

I've been subbing at this one school a lot lately. It is one that I had never been to before (unless going there for meetings or for a track and field event counts). Anyways, during those things I had never used the bathrooms at this school. Here's the thing, I'm convinced there must be a secret staff bathroom in this school and I haven't been privy to this information yet.

Why do I think there is a secret staff bathroom?

The bathroom that they have is located in their staffroom. Perfectly normal, the abnormal thing about this bathroom is that there is only one for all the female staff and one for all the male staff... which in a small school that could be okay but this school isn't too small.

I know what you're thinking... okay then... so you've had to wait to use the bathroom because there is only one.

Not at all, never once have I ever had to wait to use that bathroom. Not only have I never had to wait but I've never had anyone waiting on me either. How does this happen... I'm not sure. In fact, there is only one reasonable explanation. Secret Staff Bathroom.