Summarize this article:

Agree to private phone calls behind a closed door, but set ground rules. No calls after midnight or during dinner, for example. Ask your teen where they will be when they go out at night, but don’t call them every five minutes to confirm. Show your teen you respect and trust them by not encroaching on their privacy. This will likely make them more willing to share their thoughts or feelings with you.  It’s important to respect your teen’s privacy in small ways. This could be knocking on their bedroom door before entering their room. Or asking for permission to come into the bathroom before you enter. Avoid barging in on your teen at different times of day. Schedule a time with them to talk about their latest test score or cleaning up their room. Don’t catch your teen off guard, as this may lead to a fight. If you usually discuss these issues at dinner or in the car, bring them up with your teen during your usual time. A move across the country or a major financial decision will affect your teen’s world. So rather than spring the decision on your teen, consult with them about a major life change. Talking to them about the decision and listening to their opinion will show you respect their point of view. It will also likely make the change less painful for your teen and help them to adapt to the change. Build trust between you and your teen by keeping your conversations confidential. That is, unless there is an issue you feel you need to discuss with your partner or another adult. If you end up sharing your teen's private words, this may shut down communication. Your teen may not want to risk offering their intimate thoughts or opinions to you again. Don't betray their trust by revealing what they told you in confidence.

Summary:
Respect your teen’s privacy. Give your teen some say in major decisions. Don’t reveal to others what your teen has shared with you.