It is natural during the teen years for girls and guys to question orthodox Christianity as they are beginning to have their OWN relationship with God that is separate from their parents. Allow them to question and be there with answers!!! If they are planning to go to a secular university or college, apologetics is a MUST!!!! There is a strong attempt to belittle Christianity and undermine faith in Jesus in ALL secular and some Christian colleges. Arm your children so they will win the war against their souls!

At this point in time, teenagers can function as mature believers in Jesus enjoying His Presence, praying and seeing God answer, digging into the Bible and learning truth, and serving in His family: the church. Teenagers are not the church of tomorrow, they are the church today! Continue to set clear standards of right and wrong with appropriate consequences. Require adherence to Biblical principles! But realize that rules without relationship breeds rebellion. Make your relationship with your teen a priority and have fun together. Also share Jesus together. Pray. Share what God is teaching you in you devotional times. Serve and minister to others together, especially sharing the Gospel. Remember teens want to be passionate and zealous for something: let it be Jesus!

He who walks with the wise grows wise but a companion of fools suffers harm. Proverbs 13:20
Do not assume that with hormones raging, your high school student will have the best wisdom and discernment when it comes to choosing friends, especially those of the opposite sex. Get to know ALL their friends (and friends parents if possible) and feel free to cut off unhealthy relationships. Determine with your spouse and child what your standards on dating and/or courtship are BEFORE they meet someone they like. Stick to your guns. Your future son or daughter-in-laws and grandchildren will thank you! Talk to your children about their friends and how they spend their time together. Pray. Pray. Pray.
This is the time to train teens to be good stewards of all that God has given them: time, money and possessions. Teens should learn to manage their own schedule. We work out a class schedule at the beginning of the year (most of their work is independent!) and then they are responsible for sticking to the agreed-on schedule. If it doesn't work, we revise. Teens should keep class logs of completed assignments and credit hours for each class. Require teens to work HARD! ALL hard work brings a profit but mere talk leads to poverty! (Proverbs ) Their work around the house should be excellent, not just acceptable. Many teens will want to earn money babysitting, mowing lawns or other marketable ideas. Let them go for it!!