My students want me to go to the bar with them

I'm a 40 year old single dad and HS teacher. I'm in good shape and look pretty young (I get carded in bars with my grey hair), and the seniors in one of my classes have figured that out. They keep telling me that since we're "all basically the same age" that I should go out with them for beers.<br><br>I told them it's not a good idea and I'm their teacher, I'm 20+ years older than them, etc. but they aren't taking no for an answer. I can't say I don't appreciate the compliment, but I'm really not sure how to navigate this.