Reflecting His Image: A Practical Application to Christian Living, shared in the Atlantic Union Conference Teacher Bulletin, was written for an academy classroom setting but can be easily adapted for a homeschool setting. The objectives of this nine-week study for high schoolers include learning methods of effective witnessing and living a life completely surrendered to God . The link below will take you to the main page with the free unit lesson plan and supplementary materials.
The Adventist Home Educator 