ethics question

This is also posted in the correctional nursing thread. The position I am questioning is a psych nurse position at a jail.

I need some advice from some experienced jail nurses. I interviewed for a position at a jail recently, and it is likely that I will be offered the job. It is for a part time psych nurse. During the interview, I was told some things about the position that bothered me. I didn't ask for clarification at the time, but I want to know if this is standard practice. This job is with a regional company that contracts with that particular jail. The administrator of the medical program told me that I will be seeing patients and determining if they need medication. She mentioned various protocols and drug formularies, but stated that I can pretty much order whatever I wanted and start administering it. I wouldn't have to wait for the MD to sign off on it, but that he would sign off on anything I ordered as long as it wasn't anything "crazy". Isn't this practicing medicine without a license? I only have a BSN and RN license. Is this standard practice at a jail? The nurse decides what the inmates need and then just gets the MD to sign off on it. Please, I am very interested in this position, but this is worrying me.

Thanks!