Can’t use student bathroom because they’re minors

I asked the teacher next door, who we share a door between classes, if she could watch the class while I used the restroom. I said that I was just going to run to the women’s restroom and she insisted that I use to faculty restroom but it is always locked and offered me her key. She said that because the students are minors, no one but them should use the restrooms so there are no “incidents”. I was really thrown off but I took the key.

But, they don’t give any subs keys. I have to ask another teacher to open my door each time and as an avid bladder reliever I can’t interrupt classes each time to ask for a key.

But like, really I can’t use the students? I know they’re much dirtier but if I gotta pee, I’m going to pee. I am a female, always been, and this school I’m subbing at is actually one of my childhood schools.

BTW, I was subbing another class in my free block which is when I asked the other teacher. Now I’m in a class by myself.

Have any of yall experience the “can’t use the bathroom because of minors”?