Long Range Teaching Plan: What Should It Cover?

I know this is a perfect world scenario, but I am interested in hearing your perspective on the following . . .

You've been asked to put together a long range teaching plan for your high school student ministry. Your student ministry meets weekly, and the plan is to cover their entire high school career (four years/approx 200 meetings). Each weekly meeting must contain some form of Christian education.

What Biblical instruction do you think high school students should receive during these critical four years of their life? What critical passages, doctrines, stories, topics, themes, etc should be covered in the life of the average high schooler? Which topics, etc should be taught more than once, how often, etc?

Share your thoughts and ideas about a long range teaching plan for high school student ministries in the comment section below. Thanks!