I'm glad they got caught. That will 'teach them a lesson'! [=they will learn that they should not do that again]
We 'learned our lesson' the hard way. [=we learned from an unpleasant experience]
They studied the 'lessons' [='teachings'] of the great philosophers.
(..) Hey, it's not funny. All I wanted me was a little corn bread, you motherfuckers! All I wanted me was a little corn bread! I learned my lesson. I'll be good. WHARTON: Psst. Hey, Toot. Give you a nickel for that Moon Pie. (..)1999 The Green Mile
(..) He was just some bushwhacking John Law! Dumb son of a bitch sat with his back to the door, killed by a drunk. Oh, my suds and body. A history lesson. You never know what you'll get at work every day on the Green Mile. Thank you, Wild Bill. Not in there. Not in there. I'll be good. (..)1999 The Green Mile