Our town has a midnight curfew for anyone under 18 so that is pretty much everyone in town's curfew-which makes it easy on everyone. Our kids don't really go "out" on school nights. If they go anywhere it is to a school event so they just come home after that. They know they need their sleep on school nights so they don't want to be out too late.
Geez I must be strict. My DD16 has to be home by 830-9pm on school nights and depending on what she's doing her curfew is never past 1130pm on non school nights. Like tonight, she's leaving at 9pm to go get ice cream with her boyfriend but I have to get up at 430am. Now, I have to wait up for her.