Ratting on my friends

[D3xus]

I was talking to some of my friends at gym today; they were saying there was a huge party with drinks, wine, alcohol all sorts of crap. one of the kids apparently had 6 bottles of beer; my friend also said he had to hide a garbage bag filled with $80 worth of beer and wine in a neighbor's trash can.
Mind you these are all sophomores in high school.
I'm torn between ratting them out and keeping it to myself; they're my friends. I don't want them to ditch me or trash me because i did the right thing.
thoughts?
thanks.