Don't let them know

22 hours a week, I am the adult of the room. And not just any adult: I am the responsible, caring, funny, strict and reassuring adult.
According to my colleagues, I am a good teacher. They say that I have the right attitude. That whenever I am with the kids, it shows. A presence, a voice.
It's weird for me. I am still struggling with the fear that people might realise that I'm a fraud.
I don't want to fail the kids. I don't want to let them down.