We set out minimum expectations at 18.
So they must attend school or college and be on time.
Going out on a school night ok if homework/study up to date.
Must be respectful of other people in the household ( no late night showers that disturb people trying to get to sleep, no coming in late and being noisy)
If they want girl/boyfriends staying over they ask first.
We keep out of their relationships but make sure they know they can talk to us if things are worrying them ( DD has had one awful boyfriend and it was so hard waiting for her to see what we could see)
If staying out they should let us know by sending a text and ideally tell us where they are.
We don't track them but have occasionally discussed and agreed sharing location if they were going abroad or going to a big event that involves travelling a distance back late at night.They understand this is just to stop us worrying and so we can help easily if something goes wrong.
I have one in second year of college age 17 and one who works full time age 20.
We seem to rub along ok.