You be visible and have your students visible in a positive way as much as you can. The Bible is our authority for everything. Be sure to separate opinions from the Word. De-emphasize your opinions and emphasize the Word. Even commentaries in Bibles should never be treated as equal to the scriptures.
Nothing is equal.
Contemporary stories are a good way to help them understand the scripture, but our goal is to teach them Bible stories and truths. Teach the Bible and let stories help you - not the other way around. Encourage scripture memorization. They need to memorize scripture, but won't if we don't show them we expect it. Teach this by example, by quoting scripture to them on a very regular basis.